Heterocyclic Compounds Suitable For Treating Disorders That Respond To Modulation Of The Dopamine D3 Receptor

ABSTRACT

The invention relates to compounds of the formula (I)  
                 
wherein n is 0, 1 or 2; 
     G is CH 2  or CHR 3 ;    R 1  is H, C 1 -C 6 -alkyl, C 1 -C 6 -alkyl substituted by C 3 -C 6 -cycloalkyl, C 1 -C 6 -hydroxyalkyl, fluorinated C 1 -C 6 -alkyl, C 3 -C 6 -cycloalkyl, fluorinated C 3 -C 6 -cycloalkyl, C 3 -C 6 -alkenyl, fluorinated C 3 -C 6 -alkenyl, formyl, acetyl or propionyl;    R 2 , R 3  and R 4  are, independently of each other, H, methyl, fluoromethyl, difluoromethyl, or trifluoromethyl;    A is phenylene, pyridylene, pyrimidylene, pyrazinylene, pyridazinylene or thiophenylene, which can be substituted by one or more substituents selected from halogen, methyl, methoxy and CF 3 ;    E is NR 5  or CH 2 , wherein R 5  is H or C 1 -C 3 -alkyl;    Ar is a cyclic radical selected from the group consisting of phenyl, a 5- or 6-membered heteroaromatic radical comprising as ring members 1, 2 or 3 heteroatoms selected from N, O and S and a phenyl ring fused to a saturated or unsaturated 5- or 6-membered carbocyclic or heterocyclic ring, where the heterocyclic ring comprises as ring members 1, 2 or 3 heteroatoms selected from N, O and S and/or 1, 2 or 3 heteroatom-containing groups each independently selected from NR 8 , where R 8  is H, C 1 -C 4 -alkyl, fluorinated C 1 -C 4 -alkyl, C 1 -C 4 -alkylcarbonyl or fluorinated C 1 -C 4 -alkylcarbonyl, and where the cyclic radical Ar may carry 1, 2 or 3 substituents R a , wherein the variable R a  has the meanings given in the claims and in the description; and physiologically tolerated acid addition salts thereof. The invention also relates to the use of a compound of the formula I or a pharmaceutically acceptable salt thereof for preparing a pharmaceutical composition for the treatment of a medical disorder susceptible to treatment with a dopamine D3 receptor ligand.

BACKGROUND OF THE INVENTION

The present invention relates to novel heterocyclic compounds. The compounds possess valuable therapeutic properties and are suitable, in particular, for treating diseases that respond to modulation of the dopamine D₃ receptor.

Neurons obtain their information by way of G protein-coupled receptors, inter alia. A large number of substances exert their effect by way of these receptors. One of them is dopamine. Confirmed findings exist with regard to the presence of dopamine and its physiological function as a neurotransmitter. Disorders in the dopaminergic transmitter system result in diseases of the central nervous system which include, for example, schizophrenia, depression and Parkinson's disease. These diseases, and others, are treated with drugs which interact with the dopamine receptors.

Up until 1990, two subtypes of dopamine receptor had been clearly defined pharmacologically, namely the D₁ and D₂ receptors. More recently, a third subtype was found, namely the D₃ receptor which appears to mediate some effects of antipsychotics and antiparkinsonians (J. C. Schwartz et al., The Dopamine D₃ Receptor as a Target for Antipsychotics, in Novel Antipsychotic Drugs, H. Y. Meltzer, Ed. Raven Press, New York 1992, pages 135-144; M. Dooley et al., Drugs and Aging 1998, 12, 495-514, J. N. Joyce, Pharmacology and Therapeutics 2001, 90, pp. 231-59 “The Dopamine D₃ Receptor as a Therapeutic Target for Antipsychotic and Antiparkinsonian Drugs”).

Since then, the dopamine receptors have been divided into two families. On the one hand, there is the D₂ group, consisting of D₂, D₃ and D₄ receptors, and, on the other hand, the D₁ group, consisting of D₁ and D₅ receptors. Whereas D₁ and D₂ receptors are widely distributed, D₃ receptors appear to be expressed regioselectively. Thus, these receptors are preferentially to be found in the limbic system and the projection regions of the mesolimbic dopamine system, especially in the nucleus accumbens, but also in other regions, such as the amygdala. Because of this comparatively regioselective expression, D₃ receptors are regarded as being a target having few side-effects and it is assumed that while a selective D₃ ligand would have the properties of known antipsychotics, it would not have their dopamine D₂ receptor-mediated neurological side-effects (P. Sokoloff et al., Localization and Function of the D₃ Dopamine Receptor, Arzneim. Forsch./Drug Res. 42(1), 224 (1992); P. Sokoloff et al. Molecular Cloning and Characterization of a Novel Dopamine Receptor (D₃) as a Target for Neuroleptics, Nature, 347, 146 (1990)).

Compounds having an affinity for the dopamine D₃ receptor have been described in the prior art on various occasions, e.g. in WO 95/04713, WO 96/23760, WO 97/45503, WO98/27081 and WO 99/58499. Some of these compounds possess moderate affinities and or selectivities for the dopamine D₃ receptor. They have therefore been proposed as being suitable for treating diseases of the central nervous system. Some of the compounds described in these publications possess a pyrrolidinylphenyl structure. Unfortunately their affinity and selectivity towards the D₃ receptor or their pharmacological profile are not satisfactory. Consequently there is an ongoing need to provide new compounds, which either have an high affinity and an improved selectivity. The compounds should also have good pharmacological profile, e.g. a high brain plasma ratio, a high bioavailability, good metabolic stability, or a decreased inhibition of the mitochondrial respiration.

SUMMARY OF THE INVENTION

The invention is based on the object of providing compounds which act as highly selective dopamine D₃ receptor ligands. This object is surprisingly achieved by means of compounds of the formula I

wherein

-   n is 0, 1 or 2; -   G is CH₂ or CHR³; -   R¹ is H, C₁-C₆-alkyl, C₁-C₆-alkyl substituted by C₃-C₆-cycloalkyl,     C₁-C₆-hydroxyalkyl, fluorinated C₁-C₆-alkyl, C₃-C₆-cycloalkyl,     fluorinated C₃-C₆-cycloalkyl, C₃-C₆-alkenyl, fluorinated     C₃-C₆-alkenyl, formyl, acetyl or propionyl; -   R², R³ and R⁴ are, independently of each other, H, methyl,     fluoromethyl, difluoromethyl, or trifluoromethyl; -   A is phenylene, pyridylene, pyrimidylene, pyrazinylene,     pyridazinylene or thiophenylene, which can be substituted by one or     more substituents selected from halogen, methyl, methoxy and CF₃; -   E is NR⁵ or CH₂, wherein R⁵ is H or C₁-C₃-alkyl; -   Ar is a cyclic radical selected from the group consisting of phenyl,     a 5- or 6-membered heteroaromatic radical comprising as ring members     1, 2 or 3 heteroatoms selected from N, O and S and a phenyl ring     fused to a saturated or unsaturated 5- or 6-membered carbocyclic or     heterocyclic ring, where the heterocyclic ring comprises as ring     members 1, 2 or 3 heteroatoms selected from N, O and S and/or 1, 2     or 3 heteroatom-containing groups each independently selected from     NR⁸, where R⁸ is H, C₁-C₄-alkyl, fluorinated C₁-C₄-alkyl,     C₁-C₄-alkylcarbonyl or fluorinated C₁-C₄-alkylcarbonyl, and where     the cyclic radical Ar may carry 1, 2 or 3 substituents R^(a); -   R^(a) is halogen, C₁-C₆-alkyl, fluorinated C₁-C₆-alkyl,     C₁-C₆-hydroxyalkyl, C₁-C₆-alkoxy-C₁-C₆-alkyl, C₂-C₆-alkenyl,     fluorinated C₂-C₆-alkenyl, C₃-C₆-cycloalkyl, fluorinated     C₃-C₆-cycloalkyl, C₁-C₆-alkoxy, C₁-C₆-hydroxyalkoxy,     C₁-C₆-alkoxy-C₁-C₆-alkoxy, fluorinated C₁-C₆-alkoxy,     C₁-C₆-alkylthio, fluorinated C₁-C₆-alkylthio, C₁-C₆-alkylsulfinyl,     fluorinated C₁-C₆-alkylsulfinyl, C₁-C₆-alkylsulfonyl, fluorinated     C₁-C₆-alkylsulfonyl, phenylsulfonyl, benzyloxy, phenoxy, where the     phenyl radical in the 3 last-mentioned radicals may be unsubstituted     or may carry 1 to 3 substituents selected from C₁-C₄-alkyl,     fluorinated C₁-C₄-alkyl and halogen, CN, nitro, C₁-C₆-alkylcarbonyl,     fluorinated C₁-C₆-alkylcarbonyl, C₁-C₆-alkylcarbonylamino,     fluorinated C₁-C₆-alkylcarbonylamino, carboxy, NH—C(O)—NR⁶R⁷, NR⁶R⁷,     NR⁶R⁷—C₁-C₆-alkylene, O—NR⁶R⁷, where R⁶ and R⁷ are, independently of     each other, H, C₁-C₄-alkyl, fluorinated C₁-C₄-alkyl or C₁-C₄-alkoxy     or may form, together with N, a 4-, 5- or 6-membered saturated or     unsaturated ring, or is a saturated or unsaturated 3- to 7-membered     heterocyclic ring comprising as ring members 1, 2, 3 or 4     heteroatoms selected from N, O and S and/or 1, 2 or 3     heteroatom-containing groups selected from NR⁹, where R⁹ has one of     the meanings given for R⁸, SO, SO₂ and CO, and where the     heterocyclic ring may carry 1, 2 or 3 substituents selected from     hydroxy, halogen, C₁-C₆-alkyl, fluorinated C₁-C₆-alkyl and     C₁-C₆-alkoxy;     and physiologically tolerated acid addition salts thereof.

The present invention therefore relates to compounds of the general formula I and to their physiologically tolerated acid addition salts.

The present invention also relates to a pharmaceutical composition which comprises at least one compound of the formula I and/or at least one physiologically tolerated acid addition salt of I, where appropriate together with physiologically acceptable carriers and/or auxiliary substances.

The present invention also relates to a method for treating disorders which respond to influencing by dopamine D₃ receptor antagonists or dopamine D₃ agonists, said method comprising administering an effective amount of at least one compound of the formula I and/or at least one physiologically tolerated acid addition salt of I to a subject in need thereof.

DETAILED DESCRIPTION OF THE INVENTION

The diseases which respond to the influence of dopamine D₃ receptor antagonists or agonists include, in particular, disorders and diseases of the central nervous system, in particular affective disturbances, neurotic disturbances, stress disturbances and somatoform disturbances and psychoses, especially schizophrenia and depression and, in addition, disturbances of kidney function, in particular kidney function disturbances which are caused by diabetes mellitus (see WO 00/67847).

According to the invention, at least one compound of the general formula I having the meanings mentioned at the outset is used for treating the above mentioned indications. Provided the compounds of the formula I of a given constitution may exist in different spatial arrangements, for example if they possess one or more centers of asymmetry, polysubstituted rings or double bonds, or as different tautomers, it is also possible to use enantiomeric mixtures, in particular racemates, diastereomeric mixtures and tautomeric mixtures, preferably, however, the respective essentially pure enantiomers, diastereomers and tautomers of the compounds of formula I and/or of their salts.

Particularly, the carbon atom of the nitrogen-containing ring carrying the group A may have (S) or (R) configuration. However, the (S) configuration is preferred.

Moreover, the radical A may be in a cis or trans position to either of the substituents R², R³ or R⁴ (if at least one of those is not hydrogen). However, the cis position is preferred.

It is likewise possible to use physiologically tolerated salts of the compounds of the formula I, especially acid addition salts with physiologically tolerated acids. Examples of suitable physiologically tolerated organic and inorganic acids are hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid, C₁-C₄-alkylsulfonic acids, such as methanesulfonic acid, aromatic sulfonic acids, such as benzenesulfonic acid and toluenesulfonic acid, oxalic acid, maleic acid, fumaric acid, lactic acid, tartaric acid, adipic acid and benzoic acid. Other utilizable acids are described in Fortschritte der Arzneimittelforschung [Advances in drug research], Volume 10, pages 224 ff., Birkhäuser Verlag, Basel and Stuttgart, 1966.

The organic moieties mentioned in the above definitions of the variables are—like the term halogen—collective terms for individual listings of the individual group members. The prefix C_(n)-C_(m) indicates in each case the possible number of carbon atoms in the group.

The term halogen denotes in each case fluorine, bromine, chlorine or iodine, in particular fluorine, chlorine or bromine.

C₁-C₄ Alkyl is a straight-chain or branched alkyl group having from 1 to 4 carbon atoms. Examples of an alkyl group are methyl, ethyl, n-propyl, iso-propyl, n-butyl, 2-butyl, isobutyl or tert-butyl. C₁-C₂ Alkyl is methyl or ethyl, C₁-C₃ alkyl is additionally n-propyl or isopropyl.

C₁-C₆ Alkyl is a straight-chain or branched alkyl group having from 1 to 6 carbon atoms. Examples include C₁-C₄ alkyl as mentioned above and also pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, hexyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 1,3-dimethylbutyl, 2,2-dimethylbutyl, 2,3-dimethylbutyl, 3,3-dimethylbutyl, 1-ethylbutyl, 2-ethylbutyl, 1,1,2-trimethylpropyl, 1,2,2-trimethylpropyl, 1-ethyl-1-methylpropyl and 1-ethyl-2-methylpropyl.

Fluorinated C₁-C₆ alkyl is a straight-chain or branched alkyl group having from 1 to 6, especially 1 to 4 carbon atoms, in particular 1 to 3 carbon atoms, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by a fluorine atom such as in fluoromethyl, difluoromethyl, trifluoromethyl, (R)-1-fluoroethyl, (S)-1-fluoroethyl, 2-fluoroethyl, 1,1-difluoroethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (R)-1-fluoropropyl, (S)-1-fluoropropyl, 2-fluoropropyl, 3-fluoropropyl, 1,1-difluoropropyl, 2,2-difluoropropyl, 3,3-difluoropropyl, 3,3,3-trifluoropropyl, (R)-2-fluoro-1-methylethyl, (S)-2-fluoro-1-methylethyl, (R)-2,2-difluoro-1-methylethyl, (S)-2,2-difluoro-1-methylethyl, (R)-1,2-difluoro-1-methylethyl, (S)-1,2-difluoro-1-methylethyl, (R)-2,2,2-trifluoro-1-methylethyl, (S)-2,2,2-trifluoro-1-methylethyl, 2-fluoro-1-(fluoromethyl)ethyl, 1-(difluoromethyl)-2,2-difluoroethyl, 1-(trifluoromethyl)-2,2,2-trifluoroethyl, 1-(trifluoromethyl)-1,2,2,2-tetrafluoroethyl, (R)-1-fluorobutyl, (S)-1-fluorobutyl, 2-fluorobutyl, 3-fluorobutyl, 4-fluorobutyl, 1,1-difluorobutyl, 2,2-difluorobutyl, 3,3-difluorobutyl, 4,4-difluorobutyl, 4,4,4-trifluorobutyl, and the like.

Branched C₃-C₆ alkyl is alkyl having 3 to 6 carbon atoms at least one being a secondary or tertiary carbon atom. Examples are isopropyl, tert.-butyl, 2-butyl, isobutyl, 2-pentyl, 2-hexyl, 3-methylpentyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 1-methyl-1-ethylpropyl.

Fluorinated branched C₃-C₆ alkyl is alkyl having 3 to 6 carbon atoms at least one being a secondary or tertiary carbon atom wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by a fluorine atom.

C₁-C₆ Alkoxy is a straight-chain or branched alkyl group having from 1 to 6, in particular 1 to 4 carbon atoms, which is bound to the remainder of the molecule via an oxygen atom. Examples include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, 2-butoxy, iso-butoxy, tert.-butoxy pentyloxy, 1-methylbutoxy, 2-methylbutoxy, 3-methylbutoxy, 2,2-dimethylpropoxy, 1-ethylpropoxy, hexyloxy, 1,1-dimethylpropoxy, 1,2-dimethylpropoxy, 1-methylpentyloxy, 2-methylpentyloxy, 3-methylpentyloxy, 4-methylpentyloxy, 1,1-dimethylbutyloxy, 1,2-dimethylbutyloxy, 1,3-dimethylbutyloxy, 2,2-dimethylbutyloxy, 2,3-dimethylbutyloxy, 3,3-dimethylbutyloxy, 1-ethylbutyloxy, 2-ethylbutyloxy, 1,1,2-trimethylpropoxy, 1,2,2-trimethylpropoxy, 1-ethyl-1-methylpropoxy and 1-ethyl-2-methylpropoxy.

Fluorinated C₁-C₆ alkoxy is a straight-chain or branched alkoxy group having from 1 to 6, in particular 1 to 4 carbon atoms, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by a fluorine atoms such as in fluoromethoxy, difluoromethoxy, trifluoromethoxy, (R)-1-fluoroethoxy, (S)-1-fluoroethoxy, 2-fluoroethoxy, 1,1-difluoroethoxy, 2,2-difluoroethoxy, 2,2,2-trifluoroethoxy, (R)-1-fluoropropoxy, (S)-1-fluoropropoxy, (R)-2-fluoropropoxy, (S)-2-fluoropropoxy, 3-fluoropropoxy, 1,1-difluoropropoxy, 2,2-difluoropropoxy, 3,3-difluoropropoxy, 3,3,3-trifluoropropoxy, (R)-2-fluoro-1-methylethoxy, (S)-2-fluoro-1-methylethoxy, (R)-2,2-difluoro-1-methylethoxy, (S)-2,2-difluoro-1-methylethoxy, (R)-1,2-difluoro-1-methylethoxy, (S)-1,2-difluoro-1-methylethoxy, (R)-2,2,2-trifluoro-1-methylethoxy, (S)-2,2,2-trifluoro-1-methylethoxy, 2-fluoro-1-(fluoromethyl)ethoxy, 1-(difluoromethyl)-2,2-difluoroethoxy, (R)-1-fluorobutoxy, (S)-1-fluorobutoxy, 2-fluorobutoxy, 3-fluorobutoxy, 4-fluorobutoxy, 1,1-difluorobutoxy, 2,2-difluorobutoxy, 3,3-difluorobutoxy, 4,4-difluorobutoxy, 4,4,4-trifluorobutoxy, and the like.

C₁-C₆ Hydroxyalkyl is a straight-chain or branched alkyl group having from 1 to 6, especially 1 to 4 carbon atoms, in particular 1 to 3 carbon atoms, wherein one of the hydrogen atoms is replaced by a hydroxy group, such as in 2-hydroxyethyl or 3-hydroxypropyl.

C₁-C₆-Alkoxy-C₁-C₆-alkyl is a straight-chain or branched alkyl group having from 1 to 6, especially 1 to 4 carbon atoms, in particular 1 to 3 carbon atoms, wherein one of the hydrogen atoms is replaced by a C₁-C₆-alkoxy group, such as in methoxymethyl, 2-methoxyethyl, ethoxymethyl, 3-methoxypropyl, 3-ethoxypropyl and the like.

C₁-C₆-Alkoxy-C₁-C₆-alkoxy is a straight-chain or branched alkyl group having from 1 to 6, especially 1 to 4 carbon atoms, in particular 1 to 3 carbon atoms, wherein one of the hydrogen atoms is replaced by a C₁-C₆-alkoxy group, such as in 2-methoxyethoxy, ethoxymethoxy, 2-ethoxyethoxy, 3-methoxypropoxy, 3-ethoxypropoxy and the like.

C₁-C₆-Alkylcarbonyl is a straight-chain or branched alkyl group having from 1 to 6, especially 1 to 4 carbon atoms, in particular 1 to 3 carbon atoms, wherein one of the hydrogen atoms is replaced by a carbonyl group (CO), such as in acetyl and propionyl.

Fluorinated C₁-C₆-alkylcarbonyl is a straight-chain or branched alkyl group having from 1 to 6, especially 1 to 4 carbon atoms, in particular 1 to 3 carbon atoms, wherein one of the hydrogen atoms is replaced by a carbonyl group (CO) and wherein at least one of the remaining hydrogen atoms, e.g. 1, 2, 3, or 4 of the hydrogen atoms are replaced by a fluorine atom, such as in trifluoroacetyl and 3,3,3-trifluoropropionyl.

C₁-C₆-Alkylcarbonylamino is a straight-chain or branched alkyl group having from 1 to 6, especially 1 to 4 carbon atoms, in particular 1 to 3 carbon atoms, wherein one of the hydrogen atoms is replaced by a carbonylamino group (CO—NH—), such as in acetamido (CH₃CONH—) and propionamido (CH₃CH₂CONH—).

Fluorinated C₁-C₆-alkylcarbonylamino is a straight-chain or branched alkyl group having from 1 to 6, especially 1 to 4 carbon atoms, in particular 1 to 3 carbon atoms, wherein one of the hydrogen atoms is replaced by a carbonylamino group (CO—NH—) and wherein at least one of the remaining hydrogen atoms, e.g. 1, 2, 3, or 4 of the hydrogen atoms are replaced by a fluorine atom, such as in trifluoroacetyl and 3,3,3-trifluoropropionyl.

C₁-C₆ Alkylthio (also termed as C₁-C₆-alkylsulfanyl) (or C₁-C₆-alkylsulfinyl or C₁-C₆-alkylsulfonyl, respectively) refer to straight-chain or branched alkyl groups having 1 to 6 carbon atoms, e.g. 1 to 4 carbon atoms, which are bound to the remainder of the molecule via a sulfur atom (or S(O)O in case of alkylsulfinyl or S(O)₂O in case of alkylsulfonyl, respectively), at any bond in the alkyl group. Examples for C₁-C₄-alkylthio include methylthio, ethylthio, propylthio, isopropylthio, and n-butylthio. Examples for C₁-C₄-alkylsulfinyl include methylsulfinyl, ethylsulfinyl, propylsulfinyl, isopropylsulfinyl, and n-butylsulfinyl. Examples for C₁-C₄-alkylsulfonyl include methylsulfonyl, ethylsulfonyl, propylsulfonyl, isopropylsulfonyl, and n-butylsulfonyl.

Fluorinated C₁-C₆ alkylthio (also termed fluorinated C₁-C₆-alkylsulfanyl) is a straight-chain or branched alkylthio group having from 1 to 6, in particular 1 to 4 carbon atoms, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by fluorine atoms. Fluorinated C₁-C₆ alkylsulfinyl is a straight-chain or branched alkylsulfinyl group having from 1 to 6, in particular 1 to 4 carbon atoms, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by fluorine atoms. Fluorinated C₁-C₆ alkylsulfonyl is a straight-chain or branched alkylsulfonyl group having from 1 to 6, in particular 1 to 4 carbon atoms, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by fluorine atoms.

C₃-C₆ Cycloalkyl is a cycloaliphatic radical having from 3 to 6 C atoms, such as cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl. The cycloalkyl radical may be unsubstituted or may carry 1, 2, 3 or 4 C₁-C₄ alkyl radicals, preferably a methyl radical. One alkyl radical is preferably located in the 1-position of the cycloalkyl radical, such as in 1-methylcyclopropyl or 1-methylcyclobutyl.

Fluorinated C₃-C₆ cycloalkyl is a cycloaliphatic radical having from 3 to 6 C atoms, such as cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by a fluorine atoms such as in 1-fluorocyclopropyl, 2-fluorocyclopropyl, (S)- and (R)-2,2-difluorocyclopropyl, 1,2-difluorocyclopropyl, 2,3-difluorocyclopropyl, pentafluorocyclopropyl, 1-fluorocyclobutyl, 2-fluorocyclobutyl, 3-fluorocyclobutyl, 2,2-difluorocyclobutyl, 3,3-difluorocyclobutyl, 1,2-difluorocyclobutyl, 1,3-difluorocyclobutyl, 2,3-difluorocyclobutyl, 2,4-difluorocyclobutyl, or 1,2,2-trifluorocyclobutyl.

C₂-C₆-Alkenyl is a singly unsaturated hydrocarbon radical having 2, 3, 4, 5 or 6 C-atoms, e.g. vinyl, allyl (2-propen-1-yl), 1-propen-1-yl, 2-propen-2-yl, methallyl (2-methylprop-2-en-1-yl) and the like. C₃-C₆-Alkenyl is, in particular, allyl, 1-methylprop-2-en-1-yl, 2-buten-1-yl, 3-buten-1-yl, methallyl, 2-penten-1-yl, 3-penten-1-yl, 4-penten-1-yl, 1-methylbut-2-en-1-yl or 2-ethylprop-2-en-1-yl.

Fluorinated C₂-C₆-alkenyl is a singly unsaturated hydrocarbon radical having 2, 3, 4, 5 or 6 C-atoms, I, wherein at least one, e.g. 1, 2, 3, 4 or all of the hydrogen atoms are replaced by a fluorine atoms such as in 1-fluorovinyl, 2-fluorovinyl, 2,2-fluorovinyl, 3,3,3-fluoropropenyl, 1,1-difluoro-2-propenyl 1-fluoro-2-propenyl and the like.

C₁-C₆-Alkylene is a hydrocarbon bridging group having 1, 2, 3, 4, 5 or 6 carbon atoms, like methylene, ethylene, 1,2- and 1,3-propylene, 1,4-butylene and the like.

Examples of 5- or 6-membered heteroaromatic radicals comprise 2-, 3-, or 4-pyridyl, 2-, 4- or 5-pyrimidinyl, pyrazinyl, 3- or 4-pyridazinyl, 2- or 3-thienyl, 2- or 3-furyl, 2- or 3-pyrrolyl, 2-, 3- or 5-oxazolyl, 3-, 4- or 5-isoxazolyl, 2-, 3- or 5-thiazolyl, 3-, 4- or 5-isothiazolyl, 3-, 4- or 5-pyrazolyl, 2-, 4- or 5-imidazolyl, 2- or 5-[1,3,4]oxadiazolyl, 4- or 5-[1,2,3]oxadiazolyl, 3- or 5-[1,2,4]oxadiazolyl, 2- or 5-[1,3,4]thiadiazolyl, 2- or 5-[1,3,4]thiadiazolyl, 4- or 5-[1,2,3]thiadiazolyl, 3- or 5-[1,2,4]thiadiazolyl 1H-, 2H- or 3H-1,2,3-triazol-4-yl, 2H-triazol-3-yl, 1H-, 2H-, or 4H-1,2,4-triazolyl and 1H- or 2H-tetrazolyl, which may be unsubstituted or which may carry 1, 2 or 3 of the aforementioned radicals R^(a).

Examples of a phenyl ring fused to a saturated or unsaturated 5- or 6-membered carbocyclic or heterocyclic ring comprise indenyl, indanyl, naphthyl, 1,2- or 2,3-dihydronaphthyl, tetralin, benzofuranyl, 2,3-dihydrobenzofuranyl, benzothienyl, indolyl, indazolyl, benzimidazolyl, benzoxathiazolyl, benzoxadiazolyl, benzothiadiazolyl, benzoxazinyl, dihydrobenzoxazinyl, chinolinyl, isochinolinyl, tetrahydroisochinolinyl, chromenyl, chromanyl and the like, which may be unsubstituted or which may carry 1, 2 or 3 of the aforementioned radicals R^(a). This fused system may be bonded to the remainder of the molecule (more precisely to the sulfonyl group) via carbon atoms of the phenyl moiety or via ring atoms (C- or N-atoms) of the ring fused to phenyl.

Examples for saturated or unsaturated 3- to 7-membered heterocyclic rings (as radicals R^(a)) comprise saturated or unsaturated, aromatic or non-aromatic heterocyclic rings. Examples therefore include, apart from the above-defined 5- or 6-membered heteroaromatic radicals, aziridyl, diaziridinyl, oxiranyl, azetidinyl, azetinyl, di- and tetrahydrofuranyl, pyrrolinyl, pyrrolidinyl, oxopyrrolidinyl, pyrazolinyl, pyrazolidinyl, imidazolinyl, imidazolidinyl, oxazolinyl, oxazolidinyl, oxo-oxazolidinyl, isoxazolinyl, isoxazolidinyl, piperidinyl, piperazinyl, morpholinyl and the like.

If R⁶ and R⁷ form together with N a 4-, 5- or 6-membered ring, examples for this type of radical comprise, apart from the above-defined 5- or 6-membered heteroaromatic radicals containing at least one N atom as ring member, azetidinyl, azetinyl, pyrrolinyl, pyrrolidinyl, pyrazolinyl, pyrazolidinyl, imidazolinyl, imidazolidinyl, oxazolinyl, oxazolidinyl, piperidinyl, piperazinyl, morpholinyl and the like.

In a specific embodiment,

-   R¹ is H, C₁-C₆-alkyl which may be substituted by C₃-C₆-cycloalkyl,     fluorinated C₁-C₆-alkyl, C₃-C₆-cycloalkyl, fluorinated     C₃-C₆-cycloalkyl, C₃-C₆-alkenyl, fluorinated C₃-C₆-alkenyl, formyl,     acetyl or propionyl; and -   Ar is a cyclic radical selected from the group consisting of phenyl,     a 5- or 6-membered heteroaromatic radical comprising as ring members     1, 2 or 3 heteroatoms selected from N, O and S and a phenyl ring     fused to a saturated or unsaturated 5- or 6-membered carbocyclic or     heterocyclic ring, where the heterocyclic ring comprises as ring     members 1, 2 or 3 heteroatoms selected from N, O and S, and where     the cyclic radical may carry 1, 2 or 3 substituents R^(a) selected     from the group consisting of halogen, C₁-C₆-alkyl, fluorinated     C₁-C₆-alkyl, C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl,     C₁-C₆-alkoxy, fluorinated C₁-C₆-alkoxy, CN, acetyl, carboxy, NR⁶R⁷,     NR⁶R⁷—C₁-C₆-alkylene, where R⁶ and R⁷ are, independently of each     other, H, C₁-C₄-alkyl or fluorinated C₁-C₄-alkyl or may form,     together with N, a 4-, 5- or 6-membered saturated or unsaturated     ring, and a saturated or unsaturated 5- or 6-membered heterocyclic     ring comprising as ring members 1, 2 or 3 heteroatoms selected from     N, O and S.

In compounds of formula I, n preferably is 0 or 1; i.e. the nitrogen-containing ring is an azetidinyl group or a pyrrolidinyl group; and particularly, n is 1, which means that in a particularly preferred embodiment, the nitrogen-containing ring is a pyrrolidinyl ring.

Preferably, the radical R¹ is selected from H, C₁-C₄-alkyl, C₁-C₄-alkyl which is substituted by C₃-C₆-cycloalkyl or hydroxy, fluorinated C₁-C₄-alkyl and C₂-C₄-alkenyl. More preference is given to H, propyl, cyclopropylmethylene, fluorinated ethyl, e.g. 2-fluoroethyl, fluorinated propyl, e.g. 3-fluoropropyl, hydroxypropyl, e.g. 3-hydroxypropyl, propionyl and allyl. More preferably, R¹ is selected from H, propyl, cyclopropylmethylene, 2-fluoroethyl, 3-fluoropropyl, 3-hydroxypropyl, and allyl. In a particularly preferred embodiment, R¹ is n-propyl or allyl and especially n-propyl.

In an alternative embodiment, R¹ is preferably selected from H, C₁-C₄-alkyl, C₁-C₄-alkyl which is substituted by C₃-C₆-cycloalkyl, fluorinated C₁-C₄-alkyl and C₂-C₄-alkenyl. More preference is given to H, propyl, cyclopropylmethylene, fluorinated ethyl, e.g. 2-fluoroethyl, fluorinated propyl, e.g. 3-fluoropropyl, and allyl. In a particularly preferred embodiment, R¹ is n-propyl or allyl and especially n-propyl.

Preferably, R², R³ and R⁴ are H.

The group A is preferably phenylene, pyridylene or pyrimidylene. In a more preferred embodiment, A is 1,4-phenylene, 1,2-phenylene, 2,5-pyridylene 3,6-pyridylene or 2,5-pyrimidylene, where A may be substituted as described above. In an even more preferred embodiment, A is 1,4-phenylene, 1,2-phenylene, 3,6-pyridylene or 2,5-pyrimidylene. If A is substituted, preferred substituents are selected from halogen, in particular fluorine, and methoxy. Examples include 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 2-methoxy-1,4-phenylene, and 3-methoxy-1,4-phenylene. In a specific embodiment, A is not substituted. Particularly, A is 1,4-phenylene.

The group E is preferably NR⁵, more preferably NH or NCH₃ and in particular NH.

Preferred cyclic radicals of the group Ar are phenyl, 2- or 3-thienyl, in particular 3-thienyl, imidazolyl, in particular 4-imidazolyl, isoxazolyl, in particular 4-isoxazolyl, thiazolyl, in particular 2-thiazolyl, triazolyl, in particular 3-[1,2,4]triazolyl, thiadiazolyl, in particular 3- and 5-[1,2,4]thiadiazolyl and 2-[1,3,4]thiadiazolyl, 2-, 3- or 4-pyridyl, 2- and 5-pyrimidinyl, 1-, 2-, 3-, 4- or 5-indanyl, 2-, 3-, 4- or 5-benzofuranyl, quinolinyl, in particular 8-quinolinyl, isoquinolinyl, in particular 5-isoquinolinyl, 1,2,3,4-tetrahydroisoquinolinyl, in particular 7-1,2,3,4-tetrahydroisoquinolin-7-yl, benzothienyl, in particular 2-benzothienyl, benzothiazolyl, in particular 6-benzothiazolyl, benzoxadiazolyl, in particular 4-[2,1,3]benzoxadiazolyl, benzothiadiazolyl, in particular 4-[2,1,3]benzothiadiazolyl, benzoxazin and dihydrobenzoxazin. The numbers indicate the position at which Ar is bound to the sulfonyl group. More preferred radicals Ar are phenyl, 2-thienyl, 3-pyridyl, 5-pyridyl, 5-indanyl, 2-benzofuranyl, and 2,3-dihydrobenzofuran-2-yl. Even more preferred radicals Ar are phenyl, 2-thienyl, 5-indanyl, benzofuran-2-yl and 2,3-dihydrobenzofuran-2-yl. Specifically, Ar is phenyl.

In an alternative embodiment, preferred cyclic radicals of the group Ar are phenyl, 2- or 3-thienyl, 2-, 3- or 4-pyridyl, 1-, 2-, 3-, 4- or 5-indanyl, 2-, 3-, 4- or 5-benzofuranyl, in particular 2-thienyl, 2- or 3-pyridinyl, 5-indanyl, 5-benzofuranyl, and especially phenyl.

Preferably, R^(a) selected from the group consisting of halogen, C₁-C₆-alkyl, fluorinated C₁-C₆-alkyl, C₁-C₆-hydroxyalkyl, C₁-C₆-alkoxy-C₁-C₆-alkyl, C₂-C₆-alkenyl, C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl, C₁-C₆-alkoxy, C₁-C₆-alkoxy-C₁-C₆-alkoxy, fluorinated C₁-C₆-alkoxy, fluorinated C₁-C₆-alkylthio, C₁-C₆-alkylsulfonyl, phenylsulfonyl, benzyloxy, phenoxy, CN, nitro, acetyl, trifluoroacetyl, acetamido, carboxy, NH—C(O)—NH₂, NR⁶R⁷, NR⁶R⁷—C₁-C₆-alkylene, O—NR⁶R⁷, where R⁶ and R⁷ are, independently of each other, H, C₁-C₄-alkyl, fluorinated C₁-C₄-alkyl or C₁-C₄-alkoxy, and a saturated or unsaturated 3- to 7-membered heterocyclic ring comprising as ring members 1, 2, 3 or 4 heteroatoms selected from N, O and S and/or 1, 2 or 3 heteroatom-containing groups selected from NR⁹, where R⁹ has one of the meanings given for R⁸, SO, SO₂ and CO, and where the 3- to 7-membered heterocyclic ring may carry 1, 2 or 3 substituents selected from hydroxy, halogen, C₁-C₆-alkyl, fluorinated C₁-C₆-alkyl and C₁-C₆-alkoxy.

Preferably, the saturated or unsaturated 3- to 7-membered heterocyclic ring is selected from azetidin-1-yl, 2-methylazetidinyl, 3-methoxyazetidinyl, 3-hydroxyazetidinyl, 3-fluoroazetidinyl, pyrrolidin-1-yl, pyrrolidin-2-yl, pyrrolidin-3-yl, 2- and 3-fluoropyrrolidin-1-yl, 2,2-difluoropyrrolidin-1-yl 3,3-difluoropyrrolidin-1-yl, 2- and 3-methylpyrrolidin-1-yl, 1-methylpyrrolidin-2-yl, 2,2-dimethylpyrrolidin-1-yl 3,3-dimethylpyrrolidin-1-yl, 2-oxo-pyrrolidin-1-yl, 2- and 3-trifluoromethylpyrrolidin-1-yl, 2-oxo-oxazolidin-1-yl, piperidin-1-yl, 2-methylpiperidin-1-yl, piperazin-1-yl, 4-methylpiperazin-1-yl, morpholin-4-yl, thiomorpholin-4-yl, 1-oxothiomorpholin-4-yl, 1,1-dioxothiomorpholin-4-yl, pyrrol-1-yl, pyrrol-2-yl, pyrrol-3-yl, 1-methylpyrrol-2-yl, 1-methylpyrrol-3-yl, furan-2-yl, furan-3-yl, thiophen-2-yl, thiophen-3-yl, 5-propylthiophen-2-yl, pyrazol-1-yl, pyrazol-3-yl, pyrazol-4-yl, 1-methylpyrazol-4-yl, imidazol-1-yl, imidazol-2-yl, 1-methylimidazol-2-yl, oxazol-2-yl, oxazol-4-yl, oxazol-5-yl, isoxazol-3-yl, isoxazol-4-yl, isoxazol-5-yl, [1,2,3]triazol-1-yl, [1,2,4]triazol-1-yl, [1,2,3]triazol-2-yl, [1,2,4]triazol-3-yl, [1,2,4]triazol-4-yl, 4-methyl-[1,2,4]triazol-3-yl, 2-methyl-[1,2,3]triazol-4-yl, [1,3,4]-oxadiazol-2-yl, [1,2,4]-oxadiazol-3-yl, [1,2,4]-oxadiazol-5-yl, [1,2,3]-oxadiazol-5-yl, [1,2,3]thiadiazol-4-yl, tetrazol-1-yl, tetrazol-5-yl, 2-methyltetrazol-5-yl, 1-methyltetrazol-5-yl, furazan-3-yl, pyrid-2-yl, pyrid-3-yl, pyrid-4-yl, pyrimidin-2-yl, pyrimidin-4-yl and pyrimidin-5-yl. More preferably, the saturated or unsaturated 3- to 7-membered heterocyclic ring is selected from azetidin-1-yl, pyrrolidin-1-yl, 3,3-difluoropyrrolidin-1-yl, 2-oxo-pyrrolidin-1-yl, 2-oxo-oxazolidin-1-yl, morpholin-4-yl, 2-furanyl, 5-propylthien-2-yl, pyrrol-1-yl, pyrazol-1-yl, 1-methylpyrazol-4-yl, 1-ethylpyrazol-4-yl, oxazol-5-yl, isoxazol-3-yl, isoxazol-5-yl, 4-[1,2,3]thiadiazolyl. Even more preferably, the saturated or unsaturated 3- to 7-membered heterocyclic ring is selected from azetidin-1-yl, pyrrolidin-1-yl, 3,3-difluoropyrrolidin-1-yl, 2-oxo-pyrrolidin-1-yl, morpholin-4-yl, pyrrol-1-yl, furan-2-yl, pyrazol-1-yl, 1-methylpyrazol-4-yl, oxazol-5-yl, isoxazol-5-yl, 4-[1,2,3]thiadiazolyl.

In a preferred embodiment, the cyclic radical Ar is unsubstituted or substituted by 1, 2 or 3 substituents R^(a) selected from the group consisting of halogen, C₁-C₆-alkyl, C₁-C₆-hydroxyalkyl, fluorinated C₁-C₄-alkyl, C₁-C₄-alkoxy, fluorinated C₁-C₄-alkoxy, C₁-C₄-alkoxy-C₁-C₄-alkoxy, C₂-C₄-alkenyl, fluorinated C₂-C₄-alkenyl, NR⁶R⁷, ONR⁶R⁷, C₁-C₆-alkylene-NR⁶R⁷, where R⁶ and R⁷ are independently of each other H, C₁-C₄-alkyl or C₁-C₄-alkoxy, ureido (NHCONH₂) C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl, acetyl, carboxyl, hydroxy, cyano, nitro, benzoxy, methylsulfanyl, fluoromethylsulfanyl, difluoromethylsulfanyl, trifluoromethylsulfanyl, methylsulfonyl and one of the above-mentioned saturated or unsaturated 3- to 7-membered heterocyclic rings. In a more preferred embodiment, R^(a) is selected from the group consisting of halogen, C₁-C₆-alkyl, fluorinated C₁-C₄-alkyl, C₁-C₄-alkoxy, OCF₃, OCHF₂, OCH₂F, C₂-C₄-alkenyl, C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl, ureido, acetyl, carboxyl, hydroxy, cyano, benzoxy, trifluoromethylsulfanyl, methylsulfonyl, azetidin-1-yl, pyrrolidin-1-yl, 3,3-difluoropyrrolidin-1-yl, 2-oxo-pyrrolidin-1-yl, 2-oxo-oxazolidin-1-yl, morpholin-4-yl, 2-furanyl, 5-propylthien-2-yl, pyrrol-1-yl, pyrazol-1-yl, 1-methylpyrazol-4-yl, 1-ethylpyrazol-4-yl, oxazol-5-yl, isoxazol-3-yl, isoxazol-5-yl, and 4-[1,2,3]thiadiazolyl. Even more preferably, R^(a) is selected from the group consisting of halogen, C₁-C₆-alkyl, fluorinated C₁-C₄-alkyl, C₁-C₄-alkoxy, OCF₃, OCHF₂, C₂-C₄-alkenyl, C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl, ureido, acetyl, carboxyl, hydroxy, benzoxy, trifluoromethylsulfanyl, azetidin-1-yl, pyrrolidin-1-yl, 3,3-difluoropyrrolidin-1-yl, 2-oxo-pyrrolidin-1-yl, morpholin-4-yl, pyrrol-1-yl, furan-2-yl, pyrazol-1-yl, 1-methylpyrazol-4-yl, oxazol-5-yl, isoxazol-5-yl, and 4-[1,2,3]thiadiazolyl.

If Ar is a heteroaromatic ring, R^(a) in this case is in particular selected from halogen, C₂-C₄-alkenyl, oxazolyl and isoxazolyl. If Ar is a fused system, it is preferentially not substituted.

In an alternative embodiment, the cyclic radical is substituted by 1, 2 or 3 substituents R^(a) selected from the group consisting of halogen, C₁-C₆-alkyl, fluorinated C₁-C₄-alkyl, C₁-C₄-alkoxy, fluorinated C₁-C₄-alkoxy, C₂-C₄-alkenyl, fluorinated C₂-C₄-alkenyl, NR⁶R⁷, C₁-C₆-alkylene-NR⁶R⁷, where R⁶ and R⁷ are independently of each other H, C₁-C₄-alkyl or fluorinated C₁-C₄-alkyl or may form, together with N, a 4-, 5- or 6-membered saturated or unsaturated ring, like CH₂N(CH₃)₂, C₃-C₆-cycloalkyl optionally substituted by halogen, acetyl or carboxyl. In a more preferred embodiment, Ar is phenyl which is substituted by 1, 2 or 3 substituents selected from the group consisting of halogen, C₁-C₆-alkyl, fluorinated C₁-C₄-alkyl, C₁-C₄-alkoxy, OCF₃, OCHF₂, OCH₂F, C₂-C₄-alkenyl, fluorinated C₂-C₄-alkenyl, CH₂N(CH₃)₂, NR⁶R⁷, where R⁶ and R⁷ are independently of each other H, C₁-C₄-alkyl or fluorinated C₁-C₄-alkyl, C₃-C₆-cycloalkyl optionally substituted by halogen, acetyl or carboxyl, or Ar is thienyl, pyridyl, benzofuranyl or indanyl, which are optionally substituted by halogen, C₁-C₄-alkyl or C₁-C₄-alkenyl. More preferably, Ar is phenyl which is substituted by 1, 2 or 3 substituents R^(a) selected from fluorine or bromine, C₁-C₆-alkyl, especially methyl, ethyl, n-propyl, isopropyl, sec-butyl, isobutyl, dimethylpropyl, and particularly isopropyl, fluorinated C₁-C₄-alkyl, especially CF₃ or fluorinated isopropyl, C₁-C₄-alkoxy, especially methoxy, ethoxy, propoxy, isopropoxy or butoxy, OCF₃, OCHF₂, OCH₂F, isopropenyl, CH₂N(CH₃)₂, NR⁶R⁷, where R⁶ and R⁷ are independently of each other H, C₁-C₄-alkyl or fluorinated C₁-C₄-alkyl, C₃-C₆-cycloalkyl, especially cyclopentyl, fluorinated C₃-C₆-cycloalkyl, especially 2,2-difluorocyclopropyl, acetyl or carboxyl. Alternatively, Ar is thienyl or pyridyl which carry 1, 2 or 3 substituents selected from halogen, especially chlorine, and C₁-C₄-alkenyl, especially isopropenyl, or Ar is benzofuranyl or indanyl.

In the aforementioned 5-membered heteroaromatic radicals, Ar preferably carries one radical R^(a) in the 5-position (related to the 2-position of the SO₂-radical) and optionally one or two further radicals selected from halogen, in particular fluorine or chlorine.

Phenyl and the aforementioned 6-membered heteroaromatic radicals Ar preferably carry one radical R^(a) in the 4-position (related to the 1-position of the SO₂-radical) and optionally one or two further radicals selected from halogen, in particular fluorine or bromine.

In a very preferred embodiment of the invention Ar is phenyl that carries one radical R^(a) in the 4-position of the phenyl ring and optionally 1 or 2 halogen atoms, which are selected from halogen, in particular from fluorine or chlorine.

In a even more preferred embodiment, Ar preferably carries one radical R^(a), which has the formula R^(a′)

wherein

-   Y is N, CH or CF, -   R^(a1) and R^(a2) are independently of each other selected from     C₁-C₂-alkyl, in particular methyl, fluorinated C₁-C₂-alkyl, in     particular fluoromethyl, difluoromethyl or trifluoromethyl, provided     for Y being CH or CF one of the radicals R¹ or R² may also be     hydrogen or fluorine, or -   R^(a1) and R^(a2) form a radical (CH₂)_(m) wherein 1 or 2 of the     hydrogen atoms may be replaced by fluorine and wherein m is 2, 3 or     4, in particular CH₂—CH₂, CHF—CH₂ CF₂—CH₂, CH₂—CH₂—CH₂, CHF—CH₂—CH₂,     CF₂—CH₂—CH₂, CH₂—CHF—CH₂, CH₂—CF₂—CH₂.

In case R^(a1) and R^(a2) are different from each other, the radical of the aforementioned formula Ra may have either (R)- or (S)-configuration with regard to the Y-moiety.

Examples for preferred radicals of the formula R^(a′) comprise isopropyl, (R)-1-fluoroethyl, (S)-1-fluoroethyl, 2-fluoroethyl, 1,1-difluoroethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (R)-1-fluoropropyl, (S)-1-fluoropropyl, 2-fluoropropyl, 3-fluoropropyl, 1,1-difluoropropyl, 2,2-difluoropropyl, 3,3-difluoropropyl, 3,3,3-trifluoropropyl, (R)-2-fluoro-1-methylethyl, (S)-2-fluoro-1-methylethyl, (R)-2,2-difluoro-1-methylethyl, (S)-2,2-difluoro-1-methylethyl, (R)-1,2-difluoro-1-methylethyl, (S)-1,2-difluoro-1-methylethyl, (R)-2,2,2-trifluoro-1-methylethyl, (S)-2,2,2-trifluoro-1-methylethyl, 2-fluoro-1-(fluoromethyl)ethyl, 1-(difluoromethyl)-2,2-difluoroethyl, 1-fluoro-1-methylethyl cyclopropyl, cyclobutyl, 1-fluorocyclopropyl, (S)- and (R)-2,2-difluorocyclopropyl and 2-fluorocyclopropyl.

Amongst the radicals of the formula R^(a′) those are preferred which carry 1, 2, 3 or 4, in particular 1, 2 or 3 fluorine atoms.

In a particularly preferred embodiment, radical R^(a′) is in the 4-position of the phenyl ring.

Preferred examples for Ar are in particular the following: 4-methylphenyl, 4-ethylphenyl, 4-propylphenyl, 4-isopropylphenyl, 4-sec-butylphenyl, 4-isobutylphenyl, 4-(1,1-dimethylpropyl)-phenyl, 4-vinylphenyl, 4-isopropenylphenyl, 4-fluorophenyl, 4-chlorophenyl, 4-bromophenyl, 4-(fluoromethyl)phenyl, 3-(fluoromethyl)phenyl, 2-(fluoromethyl)phenyl, 4-(difluoromethyl)phenyl, 3-(difluoromethyl)phenyl, 2-(difluoromethyl)phenyl, 4-(trifluoromethyl)phenyl, 3-(trifluoromethyl)phenyl, 2-(trifluoromethyl)phenyl, 4-(1-fluoroethyl)-phenyl, 4-((S)-1-fluoroethyl)-phenyl, 4-((R)-1-fluoroethyl)-phenyl, 4-(2-fluoroethyl)-phenyl, 4-(1,1-difluoroethyl)-phenyl, 4-(2,2-difluoroethyl)-phenyl, 4-(2,2,2-trifluoroethyl)-phenyl, 4-(3-fluoropropyl)-phenyl, 4-(2-fluoropropyl)-phenyl, 4-((S)-2-fluoropropyl)-phenyl, 4-((R)-2-fluoropropyl)-phenyl, 4-(3,3-difluoropropyl)-phenyl, 4-(3,3,3-trifluoropropyl)-phenyl, 4-(1-fluoro-1-methylethyl)phenyl, 4-(2-fluoro-1-methylethyl)-phenyl, 4-((S)-2-fluoro-1-methylethyl)-phenyl, 4-((R)-2-fluoro-1-methylethyl)-phenyl, 4-(2,2-difluoro-1-methylethyl)-phenyl, 4-((S)-2,2-difluoro-1-methylethyl)-phenyl, 4-((R)-2,2-difluoro-1-methylethyl)-phenyl, 4-(2,2,2-trifluoro-1-methylethyl)-phenyl, 4-((S)-2,2,2-trifluoro-1-methylethyl)-phenyl, 4-((R)-2,2,2-trifluoro-1-methylethyl)-phenyl, 4-(2-fluoro-1-fluoromethylethyl)-phenyl, 4-(1-difluoromethyl-2,2-difluoroethyl)-phenyl, 4-(1,1-dimethyl-2-fluoroethyl)-phenyl, 4-methoxyphenyl, 4-ethoxyphenyl, 4-propoxyphenyl, 4-isopropoxyphenyl, 4-butoxyphenyl, 4-(fluoromethoxy)-phenyl, 4-(difluoromethoxy)-phenyl, 4-(trifluoromethoxy)-phenyl, 3-(trifluoromethoxy)-phenyl, 4-(2-fluoroethoxy)-phenyl, 4-(2,2-difluoroethoxy)-phenyl, 4-(2,2,2-trifluoroethoxy)-phenyl, 4-(1,1,2,2-tetrafluoroethoxy)-phenyl, 4-cyclopropylphenyl, 4-cyclobutylphenyl, 4-cyclopentylphenyl, 4-(2,2-difluorocyclopropyl)-phenyl, 3,4-difluorophenyl, 4-bromo-3-fluorophenyl, 4-bromo-2-fluorophenyl, 4-bromo-2,5-difluorophenyl, 2-fluoro-4-isopropylphenyl, 3-fluoro-4-isopropylphenyl, 4-(1-hydroxy-1-methylethyl)-phenyl, 4-(2-hydroxy-2-methylpropyl)-phenyl, 4-acetylphenyl, 4-carboxyphenyl, 4-cyanophenyl, 4-hydroxyphenyl, 4-(O-benzyl)-phenyl, 4-(2-methoxyethoxy)-phenyl, 4-(CH₂—N(CH₃)₂)-phenyl, 4-(NH—CO—NH₂)-phenyl, 4-(methylsulfanyl)-phenyl, 4-(fluoromethylsulfanyl)phenyl, 4-(difluoromethylsulfanyl)-phenyl, 4-(trifluoromethylsulfanyl)-phenyl, 4-(methylsulfonyl)-phenyl, 4-(N-methoxy-N-methyl-amino)-phenyl, 4-(methoxyamino)phenyl, 4-(ethoxyamino)-phenyl, 4-(N-methylaminooxy)-phenyl, 4-(N,N-dimethylaminooxy)-phenyl, 4-(azetidin-1-yl)-phenyl, 4-(2-methylazetidin-1-yl)-phenyl, 4-((S)-2-methylazetidin-1-yl)-phenyl, 4-((R)-2-methylazetidin-1-yl)-phenyl, 4-(3-fluoroazetidin-1-yl)-phenyl, 4-(3-methoxyazetidin-1-yl)-phenyl, 4-(3-hydroxyazetidin-1-yl)-phenyl, 4-(pyrrolidin-1-yl)-phenyl, 4-(pyrrolidin-2-yl)-phenyl, 4-((S)-pyrrolidin-2-yl)phenyl, 4-((R)-pyrrolidin-2-yl)-phenyl, 4-(pyrrolidin-3-yl)-phenyl, 4-((S)-pyrrolidin-3-yl)phenyl, 4-((R)-pyrrolidin-3-yl)-phenyl, 4-(2-fluoropyrrolidin-1-yl)-phenyl, 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl, 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl, 4-(3-fluoropyrrolidin-1-yl)-phenyl, 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl, 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl, 4-(2,2-difluoropyrrolidin-1-yl)-phenyl, 4-(3,3-difluoropyrrolidin-1-yl)-phenyl, 4-(2-methylpyrrolidin-1-yl)-phenyl, 4-((S)-2-methylpyrrolidin-1-yl)-phenyl, 4-((R)-2-methylpyrrolidin-1-yl)-phenyl, 4-(3-methylpyrrolidin-1-yl)-phenyl, 4-((S)-3-methylpyrrolidin-1-yl)-phenyl, 4-((R)-3-methylpyrrolidin-1-yl)-phenyl, 4-(1-methylpyrrolidin-2-yl)-phenyl, 4-((S)-1-methylpyrrolidin-2-yl)-phenyl, 4-((R)-1-methylpyrrolidin-2-yl)-phenyl, 4-(1-methylpyrrolidin-3-yl)-phenyl, 4-((S)-1-methylpyrrolidin-3-yl)-phenyl, 4-((R)-1-methylpyrrolidin-3-yl)-phenyl, 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl, 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl, 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl, 4-((S)-2-trifluoromethylpyrrolidin-1-yl)-phenyl, 4-((R)-2-trifluoromethylpyrrolidin-1-yl)-phenyl, 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl, 4-((S)-3-trifluoromethylpyrrolidin-1-yl)-phenyl, 4-((R)-3-trifluoromethylpyrrolidin-1-yl)phenyl, 4-(2-oxopyrrolidin-1-yl)-phenyl, 4-(2-oxo-oxazolidin-3-yl)-phenyl, 4-(piperidin-1-yl)-phenyl, 4-(2-methylpiperidin-1-yl)-phenyl, 4-((S)-2-methylpiperidin-1-yl)-phenyl, 4-((R)-2-methylpiperidin-1-yl)-phenyl, 4-(piperazin-1-yl)-phenyl, 4-(4-methylpiperazin-1-yl)-phenyl, 4-(morpholin-4-yl)-phenyl, 4-(thiomorpholin-4-yl)-phenyl, 4-(1-oxothiomorpholin-4-yl)-phenyl, 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl, 4-(pyrrol-1-yl)phenyl, 4-(pyrrol-2-yl)-phenyl, 4-(pyrrol-3-yl)-phenyl, 4-(1-methylpyrrol-2-yl)-phenyl, 4-(1-methylpyrrol-3-yl)-phenyl, 4-(furan-2-yl)-phenyl, 4-(furan-3-yl)-phenyl, 4-(thiophen-2-yl)-phenyl, 4-(thiophen-3-yl)-phenyl, 4-(5-propylthien-2-yl)-phenyl, 4-(pyrazol-1-yl)phenyl, 4-(pyrazol-3-yl)-phenyl, 4-(pyrazol-4-yl)-phenyl, 4-(1-methyl-1H-pyrazol-4-yl)-phenyl, 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl, 4-(1-methyl-1H-pyrazol-5-yl)-phenyl, 4-(1H-imidazol-2-yl)-phenyl, 4-(imidazol-1-yl)-phenyl, 4-(1-methylimidazol-2-yl)-phenyl, 4-(oxazol-2-yl)-phenyl, 4-(oxazol-4-yl)-phenyl, 4-(oxazol-5-yl)-phenyl, 4-(isoxazol-3-yl)phenyl, 4-(isoxazol-4-yl)-phenyl, 4-(isoxazol-5-yl)-phenyl, 4-([1,2,3]-triazol-1-yl)-phenyl, 4-([1,2,4]-triazol-1-yl)-phenyl, 4-([1,2,3]-triazol-2-yl)-phenyl, 4-(4H-[1,2,4]-triazol-3-yl)phenyl, 4-([1,2,4]-triazol-4-yl)-phenyl, 4-(2H-[1,2,3]-triazol-4-yl)-phenyl, 4-(4-methyl-4H-[1,2,4]-triazol-3-yl)-phenyl, 4-(2-methyl-2H-[1,2,3]-triazol-4-yl)-phenyl, 4-([1,3,4]-oxadiazol-2-yl)-phenyl, 4-([1,2,4]-oxadiazol-3-yl)-phenyl, 4-([1,2,4]-oxadiazol-5-yl)phenyl, 4-([1,2,3]-oxadiazol-4-yl)-phenyl, 4-([1,2,3]-oxadiazol-5-yl)-phenyl, 4-([1,2,3]-thiadiazol-4-yl)-phenyl, 4-(1H-tetrazol-5-yl)-phenyl, 4-(tetrazol-1-yl)-phenyl, 4-(2-methyl-2H-tetrazol-5-yl)-phenyl, 4-(1-methyl-1H-tetrazol-5-yl)-phenyl, 4-furazan-3-yl-phenyl, 4-(pyrid-2-yl)-phenyl, 4-(pyrid-3-yl)-phenyl, 4-(pyrid-4-yl)-phenyl, 4-(pyrimidin-2-yl)phenyl, 4-(pyrimidin-4-yl)-phenyl, 4-(pyrimidin-5-yl)-phenyl, 5-isopropylthiophen-2-yl, 2-chlorothiophen-5-yl, 2,5-dichlorothiophen-4-yl, 2,3-dichlorothiophen-5-yl, 2-chloro-3-nitrothiophen-5-yl, 2-(phenylsulfonyl)-thiophen-5-yl, 2-(pyridin-2-yl)thiophen-5-yl, 2-(5-(trifluoromethyl)isoxazol-3-yl)-thiophen-5-yl, 2-(2-methylthiazol-4-yl)-thiophen-5-yl, 1-methyl-1H-imidazol-4-yl, 1,2-dimethyl-1H-imidazol-4-yl, 3,5-dimethylisoxazol-4-yl, thiazol-2-yl, 4-methylthiazol-2-yl, 4-isopropylthiazol-2-yl, 4-trifluoromethylthiazol-2-yl, 5-methylthiazol-2-yl, 5-isopropylthiazol-2-yl, 5-trifluoromethylthiazol-2-yl, 2,4-dimethylthiazol-5-yl, 2-acetamido-4-methylthiazol-5-yl, 4H-[1,2,4]triazol-3-yl, 5-methyl-4H-[1,2,4]triazol-3-yl, 4-methyl-4H-[1,2,4]triazol-3-yl, 5-isopropyl-4H-[1,2,4]triazol-3-yl, 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl, 4,5-dimethyl-4H-[1,2,4]triazol-3-yl, 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl, 5-trifluoromethyl-4-methyl-4H-[1,2,4]triazol-3-yl, [1,3,4]thiadiazol-2-yl, 5-methyl-[1,3,4]thiadiazol-2-yl, 5-isopropyl-[1,3,4]thiadiazol-2-yl, 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl, 3-bromo-2-chloropyrid-5-yl, 2-(4-morpholino)pyrid-5-yl, 2-phenoxypyrid-5-yl, (2-isopropyl)-pyrimidin-5-yl, (5-isopropyl)-pyrimidin-2-yl, 8-quinolyl, 5-isoquinolyl, 2-(trifluoroacetyl)-1,2,3,4-tetrahydroisoquinolin-7-yl, 5-chloro-3-methylbenzothiophen-2-yl, 3,4-dihydro-4-methyl-2H-benzo[b][1,4]oxazinyl, benzothiazol-6-yl, benzo[2,1,3]oxadiazol-4-yl, 5-chlorobenzo[2,1,3]oxadiazol-4-yl, 7-chlorobenzo[2,1,3]oxadiazol-4-yl and benzo[2,1,3]thiadiazol-4-yl.

Particularly preferred compounds I are those of formulae I.a, I.b, I.c, I.d, I.e, I.f, I.g, I.h, I.i, I.k, I.l, I.m, I.n, I.o, I.p, I.q, I.r, I.s and I.t, wherein R¹ and Ar have the above-defined meanings. Preferred meanings of R¹ and Ar are as defined above.—

Examples of preferred compounds which are represented by the formulae I.a, I.b, I.c, I.d, I.e, I.f, I.g, I.h, I.i, I.k, I.l, I.m, I.n, I.o, I.p, I.q, I.r, I.s and I.t are the individual compounds listed above, where the variables Ar and R¹ have the meanings given in one row of table A. TABLE A No. R¹ Ar 1. propyl 4-methylphenyl 2. propyl 4-ethylphenyl 3. propyl 4-propylphenyl 4. propyl 4-isopropylphenyl 5. propyl 4-sec-butylphenyl 6. propyl 4-isobutylphenyl 7. propyl 4-(1,1-dimethylpropyl)-phenyl 8. propyl 4-vinylphenyl 9. propyl 4-isopropenylphenyl 10. propyl 4-fluorophenyl 11. propyl 4-chlorophenyl 12. propyl 4-bromophenyl 13. propyl 4-(fluoromethyl)phenyl 14. propyl 3-(fluoromethyl)phenyl 15. propyl 2-(fluoromethyl)phenyl 16. propyl 4-(difluoromethyl)phenyl 17. propyl 3-(difluoromethyl)phenyl 18. propyl 2-(difluoromethyl)phenyl 19. propyl 4-(trifluoromethyl)phenyl 20. propyl 3-(trifluoromethyl)phenyl 21. propyl 2-(trifluoromethyl)phenyl 22. propyl 4-(1-fluoroethyl)-phenyl 23. propyl 4-((S)-1-fluoroethyl)-phenyl 24. propyl 4-((R)-1-fluoroethyl)-phenyl 25. propyl 4-(2-fluoroethyl)-phenyl 26. propyl 4-(1,1-difluoroethyl)-phenyl 27. propyl 4-(2,2-difluoroethyl)-phenyl 28. propyl 4-(2,2,2-trifluoroethyl)-phenyl 29. propyl 4-(3-fluoropropyl)-phenyl 30. propyl 4-(2-fluoropropyl)-phenyl 31. propyl 4-((S)-2-fluoropropyl)-phenyl 32. propyl 4-((R)-2-fluoropropyl)-phenyl 33. propyl 4-(3,3-difluoropropyl)-phenyl 34. propyl 4-(3,3,3-trifluoropropyl)-phenyl 35. propyl 4-(1-fluoro-1-methylethyl)-phenyl 36. propyl 4-(2-fluoro-1-methylethyl)-phenyl 37. propyl 4-((S)-2-fluoro-1-methylethyl)-phenyl 38. propyl 4-((R)-2-fluoro-1-methylethyl)-phenyl 39. propyl 4-(2,2-difluoro-1-methylethyl)-phenyl 40. propyl 4-((S)-2,2-difluoro-1-methylethyl)-phenyl 41. propyl 4-((R)-2,2-difluoro-1-methylethyl)-phenyl 42. propyl 4-(2,2,2-trifluoro-1-methylethyl)-phenyl 43. propyl 4-((S)-2,2,2-trifluoro-1-methylethyl)-phenyl 44. propyl 4-((R)-2,2,2-trifluoro-1-methylethyl)-phenyl 45. propyl 4-(2-fluoro-1-fluoromethylethyl)-phenyl 46. propyl 4-(1-difluoromethyl-2,2-difluoroethyl)- phenyl 47. propyl 4-(1,1-dimethyl-2-fluoroethyl)-phenyl 48. propyl 4-methoxyphenyl 49. propyl 4-ethoxyphenyl 50. propyl 4-propoxyphenyl 51. propyl 4-isopropoxyphenyl 52. propyl 4-butoxyphenyl 53. propyl 4-(fluoromethoxy)-phenyl 54. propyl 4-(difluoromethoxy)-phenyl 55. propyl 4-(trifluoromethoxy)-phenyl 56. propyl 3-(trifluoromethoxy)-phenyl 57. propyl 4-(2-fluoroethoxy)-phenyl 58. propyl 4-(2,2-difluoroethoxy)-phenyl 59. propyl 4-(2,2,2-trifluoroethoxy)-phenyl 60. propyl 4-(1,1,2,2-tetrafluoroethoxy)-phenyl 61. propyl 4-cyclopropylphenyl 62. propyl 4-cyclobutylphenyl 63. propyl 4-cyclopentylphenyl 64. propyl 4-(2,2-difluorocyclopropyl)-phenyl 65. propyl 3,4-difluorophenyl 66. propyl 4-bromo-3-fluorophenyl 67. propyl 4-bromo-2-fluorophenyl 68. propyl 4-bromo-2,5-difluorophenyl 69. propyl 2-fluoro-4-isopropylphenyl 70. propyl 3-fluoro-4-isopropylphenyl 71. propyl 4-(1-hydroxy-1-methylethyl)-phenyl 72. propyl 4-(2-hydroxy-1-methylpropyl)-phenyl 73. propyl 4-acetylphenyl 74. propyl 4-carboxyphenyl 75. propyl 4-cyanophenyl 76. propyl 4-hydroxyphenyl 77. propyl 4-(O-benzyl)-phenyl 78. propyl 4-(2-methoxyethoxy)-phenyl 79. propyl 4-(CH₂—N(CH₃)₂)-phenyl 80. propyl 4-(NH—CO—NH₂)-phenyl 81. propyl 4-(methylsulfanyl)-phenyl 82. propyl 4-(fluoromethylsulfanyl)-phenyl 83. propyl 4-(difluoromethylsulfanyl)-phenyl 84. propyl 4-(trifluoromethylsulfanyl)-phenyl 85. propyl 4-(methylsulfonyl)-phenyl 86. propyl 4-(N-methoxy-N-methyl-amino)-phenyl 87. propyl 4-(methoxyamino)-phenyl 88. propyl 4-(ethoxyamino)-phenyl 89. propyl 4-(N-methylaminooxy)-phenyl 90. propyl 4-(N,N-dimethylaminooxy)-phenyl 91. propyl 4-(azetidin-1-yl)-phenyl 92. propyl 4-(2-methylazetidin-1-yl)-phenyl 93. propyl 4-((S)-2-methylazetidin-1-yl)-phenyl 94. propyl 4-((R)-2-methylazetidin-1-yl)-phenyl 95. propyl 4-(3-fluoroazetidin-1-yl)-phenyl 96. propyl 4-(3-methoxyazetidin-1-yl)-phenyl 97. propyl 4-(3-hydroxyazetidin-1-yl)-phenyl 98. propyl 4-(pyrrolidin-1-yl)-phenyl 99. propyl 4-(pyrrolidin-2-yl)-phenyl 100. propyl 4-((S)-pyrrolidin-2-yl)-phenyl 101. propyl 4-((R)-pyrrolidin-2-yl)-phenyl 102. propyl 4-(pyrrolidin-3-yl)-phenyl 103. propyl 4-((S)-pyrrolidin-3-yl)-phenyl 104. propyl 4-((R)-pyrrolidin-3-yl)-phenyl 105. propyl 4-(2-fluoropyrrolidin-1-yl)-phenyl 106. propyl 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl 107. propyl 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl 108. propyl 4-(3-fluoropyrrolidin-1-yl)-phenyl 109. propyl 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl 110. propyl 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl 111. propyl 4-(2,2-difluoropyrrolidin-1-yl)-phenyl 112. propyl 4-(3,3-difluoropyrrolidin-1-yl)-phenyl 113. propyl 4-(2-methylpyrrolidin-1-yl)-phenyl 114. propyl 4-((S)-2-methylpyrrolidin-1-yl)-phenyl 115. propyl 4-((R)-2-methylpyrrolidin-1-yl)-phenyl 116. propyl 4-(3-methylpyrrolidin-1-yl)-phenyl 117. propyl 4-((S)-3-methylpyrrolidin-1-yl)-phenyl 118. propyl 4-((R)-3-methylpyrrolidin-1-yl)-phenyl 119. propyl 4-(1-methylpyrrolidin-2-yl)-phenyl 120. propyl 4-((S)-1-methylpyrrolidin-2-yl)-phenyl 121. propyl 4-((R)-1-methylpyrrolidin-2-yl)-phenyl 122. propyl 4-(1-methylpyrrolidin-3-yl)-phenyl 123. propyl 4-((S)-1-methylpyrrolidin-3-yl)-phenyl 124. propyl 4-((R)-1-methylpyrrolidin-3-yl)-phenyl 125. propyl 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl 126. propyl 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl 127. propyl 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl 128. propyl 4-((S)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 129. propyl 4-((R)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 130. propyl 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl 131. propyl 4-((S)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 132. propyl 4-((R)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 133. propyl 4-(2-oxopyrrolidin-1-yl)-phenyl 134. propyl 4-(2-oxo-oxazolidin-3-yl)-phenyl 135. propyl 4-(piperidin-1-yl)-phenyl 136. propyl 4-(2-methylpiperidin-1-yl)-phenyl 137. propyl 4-((S)-2-methylpiperidin-1-yl)-phenyl 138. propyl 4-((R)-2-methylpiperidin-1-yl)-phenyl 139. propyl 4-(piperazin-1-yl)-phenyl 140. propyl 4-(4-methylpiperazin-1-yl)-phenyl 141. propyl 4-(morpholin-4-yl)-phenyl 142. propyl 4-(thiomorpholin-4-yl)-phenyl 143. propyl 4-(1-oxo-thiomorpholin-4-yl)-phenyl 144. propyl 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl 145. propyl 4-(pyrrol-1-yl)-phenyl 146. propyl 4-(pyrrol-2-yl)-phenyl 147. propyl 4-(pyrrol-3-yl)-phenyl 148. propyl 4-(1-methylpyrrol-2-yl)-phenyl 149. propyl 4-(1-methylpyrrol-3-yl)-phenyl 150. propyl 4-(furan-2-yl)-phenyl 151. propyl 4-(furan-3-yl)-phenyl 152. propyl 4-(thiophen-2-yl)-phenyl 153. propyl 4-(thiophen-3-yl)-phenyl 154. propyl 4-(5-propylthien-2-yl)-phenyl 155. propyl 4-(pyrazol-1-yl)-phenyl 156. propyl 4-(pyrazol-3-yl)-phenyl 157. propyl 4-(pyrazol-4-yl)-phenyl 158. propyl 4-(1-methyl-1H-pyrazol-4-yl)-phenyl 159. propyl 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl 160. propyl 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 161. propyl 4-(1H-imidazol-2-yl)-phenyl 162. propyl 4-(imidazol-1-yl)-phenyl 163. propyl 4-(1-methylimidazol-2-yl)-phenyl 164. propyl 4-(oxazol-2-yl)-phenyl 165. propyl 4-(oxazol-4-yl)-phenyl 166. propyl 4-(oxazol-5-yl)-phenyl 167. propyl 4-(isoxazol-3-yl)-phenyl 168. propyl 4-(isoxazol-4-yl)-phenyl 169. propyl 4-(isoxazol-5-yl)-phenyl 170. propyl 4-([1,2,3]-triazol-1-yl)-phenyl 171. propyl 4-([1,2,4]-triazol-1-yl)-phenyl 172. propyl 4-([1,2,3]-triazol-2-yl)-phenyl 173. propyl 4-(4H-[1,2,4]-triazol-3-yl)-phenyl 174. propyl 4-([1,2,4]-triazol-4-yl)-phenyl 175. propyl 4-(2H-[1,2,3]-triazol-4-yl)-phenyl 176. propyl 4-(4-methyl-4H-[1,2,4]-triazol-3-yl)-phenyl 177. propyl 4-(2-methyl-2H-[1,2,3]-triazol-4-yl)-phenyl 178. propyl 4-([1,3,4]-oxadiazol-2-yl)-phenyl 179. propyl 4-([1,2,4]-oxadiazol-3-yl)-phenyl 180. propyl 4-([1,2,4]-oxadiazol-5-yl)-phenyl 181. propyl 4-([1,2,3]-oxadiazol-4-yl)-phenyl 182. propyl 4-([1,2,3]-oxadiazol-5-yl)-phenyl 183. propyl 4-([1,2,3]-thiadiazol-4-yl)-phenyl 184. propyl 4-(1H-tetrazol-5-yl)-phenyl 185. propyl 4-(tetrazol-1-yl)-phenyl 186. propyl 4-(2-methyl-2H-tetrazol-5-yl)-phenyl 187. propyl 4-(1-methyl-1H-tetrazol-5-yl)-phenyl 188. propyl 4-furazan-3-yl-phenyl 189. propyl 4-(pyrid-2-yl)-phenyl 190. propyl 4-(pyrid-3-yl)-phenyl 191. propyl 4-(pyrid-4-yl)-phenyl 192. propyl 4-(pyrimidin-2-yl)-phenyl 193. propyl 4-(pyrimidin-4-yl)-phenyl 194. propyl 4-(pyrimidin-5-yl)-phenyl 195. propyl 5-isopropylthiophen-2-yl 196. propyl 2-chlorothiophen-5-yl 197. propyl 2,5-dichlorothiophen-4-yl 198. propyl 2,3-dichlorothiophen-5-yl 199. propyl 2-chloro-3-nitrothiophen-5-yl 200. propyl 2-(phenylsulfonyl)-thiophen-5-yl 201. propyl 2-(pyridin-2-yl)thiophen-5-yl 202. propyl 2-(5-(trifluoromethyl)isoxazol-3-yl)- thiophen-5-yl 203. propyl 2-(2-methylthiazol-4-yl)-thiophen-5-yl 204. propyl 1-methyl-1H-imidazol-4-yl 205. propyl 1,2-dimethyl-1H-imidazol-4-yl 206. propyl 3,5-dimethylisoxazol-4-yl 207. propyl thiazol-2-yl 208. propyl 4-methylthiazol-2-yl 209. propyl 4-isopropylthiazol-2-yl 210. propyl 4-trifluoromethylthiazol-2-yl 211. propyl 5-methylthiazol-2-yl 212. propyl 5-isopropylthiazol-2-yl 213. propyl 5-trifluoromethylthiazol-2-yl 214. propyl 2,4-dimethylthiazol-5-yl 215. propyl 2-acetamido-4-methylthiazol-5-yl 216. propyl 4H-[1,2,4]triazol-3-yl 217. propyl 5-methyl-4H-[1,2,4]triazol-3-yl 218. propyl 4-methyl-4H-[1,2,4]triazol-3-yl 219. propyl 5-isopropyl-4H-[1,2,4]triazol-3-yl 220. propyl 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl 221. propyl 4,5-dimethyl-4H-[1,2,4]triazol-3-yl 222. propyl 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl 223. propyl 5-trifluoromethyl-4-methyl-4H- [1,2,4]triazol-3-yl 224. propyl [1,3,4]thiadiazol-2-yl 225. propyl 5-methyl-[1,3,4]thiadiazol-2-yl 226. propyl 5-isopropyl-[1,3,4]thiadiazol-2-yl 227. propyl 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl 228. propyl 3-bromo-2-chloropyrid-5-yl 229. propyl 2-(4-morpholino)-pyrid-5-yl 230. propyl 2-phenoxypyrid-5-yl 231. propyl (2-isopropyl)-pyrimidin-5-yl 232. propyl (5-isopropyl)-pyrimidin-2-yl 233. propyl 8-quinolyl 234. propyl 5-isoquinolyl 235. propyl 2-(trifluoroacetyl)-1,2,3,4- tetrahydroisoquinolin-7-yl 236. propyl 5-chloro-3-methylbenzothiophen-2-yl 237. propyl 3,4-dihydro-4-methyl-2H- benzo[b][1,4]oxazinyl 238. propyl benzothiazol-6-yl 239. propyl benzo[2,1,3]oxadiazol-4-yl 240. propyl 5-chlorobenzo[2,1,3]oxadiazol-4-yl 241. propyl 7-chlorobenzo[2,1,3]oxadiazol-4-yl 242. propyl benzo[2,1,3]thiadiazol-4-yl 243. ethyl 4-methylphenyl 244. ethyl 4-ethylphenyl 245. ethyl 4-propylphenyl 246. ethyl 4-isopropylphenyl 247. ethyl 4-sec-butylphenyl 248. ethyl 4-isobutylphenyl 249. ethyl 4-(1,1-dimethylpropyl)-phenyl 250. ethyl 4-vinylphenyl 251. ethyl 4-isopropenylphenyl 252. ethyl 4-fluorophenyl 253. ethyl 4-chlorophenyl 254. ethyl 4-bromophenyl 255. ethyl 4-(fluoromethyl)phenyl 256. ethyl 3-(fluoromethyl)phenyl 257. ethyl 2-(fluoromethyl)phenyl 258. ethyl 4-(difluoromethyl)phenyl 259. ethyl 3-(difluoromethyl)phenyl 260. ethyl 2-(difluoromethyl)phenyl 261. ethyl 4-(trifluoromethyl)phenyl 262. ethyl 3-(trifluoromethyl)phenyl 263. ethyl 2-(trifluoromethyl)phenyl 264. ethyl 4-(1-fluoroethyl)-phenyl 265. ethyl 4-((S)-1-fluoroethyl)-phenyl 266. ethyl 4-((R)-1-fluoroethyl)-phenyl 267. ethyl 4-(2-fluoroethyl)-phenyl 268. ethyl 4-(1,1-difluoroethyl)-phenyl 269. ethyl 4-(2,2-difluoroethyl)-phenyl 270. ethyl 4-(2,2,2-trifluoroethyl)-phenyl 271. ethyl 4-(3-fluoropropyl)-phenyl 272. ethyl 4-(2-fluoropropyl)-phenyl 273. ethyl 4-((S)-2-fluoropropyl)-phenyl 274. ethyl 4-((R)-2-fluoropropyl)-phenyl 275. ethyl 4-(3,3-difluoropropyl)-phenyl 276. ethyl 4-(3,3,3-trifluoropropyl)-phenyl 277. ethyl 4-(1-fluoro-1-methylethyl)-phenyl 278. ethyl 4-(2-fluoro-1-methylethyl)-phenyl 279. ethyl 4-((S)-2-fluoro-1-methylethyl)-phenyl 280. ethyl 4-((R)-2-fluoro-1-methylethyl)-phenyl 281. ethyl 4-(2,2-difluoro-1-methylethyl)-phenyl 282. ethyl 4-((S)-2,2-difluoro-1-methylethyl)-phenyl 283. ethyl 4-((R)-2,2-difluoro-1-methylethyl)-phenyl 284. ethyl 4-(2,2,2-trifluoro-1-methylethyl)-phenyl 285. ethyl 4-((S)-2,2,2-trifluoro-1-methylethyl)-phenyl 286. ethyl 4-((R)-2,2,2-trifluoro-1-methylethyl)-phenyl 287. ethyl 4-(2-fluoro-1-fluoromethylethyl)-phenyl 288. ethyl 4-(1-difluoromethyl-2,2-difluoroethyl)- phenyl 289. ethyl 4-(1,1-dimethyl-2-fluoroethyl)-phenyl 290. ethyl 4-methoxyphenyl 291. ethyl 4-ethoxyphenyl 292. ethyl 4-propoxyphenyl 293. ethyl 4-isopropoxyphenyl 294. ethyl 4-butoxyphenyl 295. ethyl 4-(fluoromethoxy)-phenyl 296. ethyl 4-(difluoromethoxy)-phenyl 297. ethyl 4-(trifluoromethoxy)-phenyl 298. ethyl 3-(trifluoromethoxy)-phenyl 299. ethyl 4-(2-fluoroethoxy)-phenyl 300. ethyl 4-(2,2-difluoroethoxy)-phenyl 301. ethyl 4-(2,2,2-trifluoroethoxy)-phenyl 302. ethyl 4-(1,1,2,2-tetrafluoroethoxy)-phenyl 303. ethyl 4-cyclopropylphenyl 304. ethyl 4-cyolobutylphenyl 305. ethyl 4-cyclopentylphenyl 306. ethyl 4-(2,2-difluorocyclopropyl)-phenyl 307. ethyl 3,4-difluorophenyl 308. ethyl 4-bromo-3-fluorophenyl 309. ethyl 4-bromo-2-fluorophenyl 310. ethyl 4-bromo-2,5-difluorophenyl 311. ethyl 2-fluoro-4-isopropylphenyl 312. ethyl 3-fluoro-4-isopropylphenyl 313. ethyl 4-(1-hydroxy-1-methylethyl)-phenyl 314. ethyl 4-(2-hydroxy-2-methylpropyl)-phenyl 315. ethyl 4-acetylphenyl 316. ethyl 4-carboxyphenyl 317. ethyl 4-cyanophenyl 318. ethyl 4-hydroxyphenyl 319. ethyl 4-(O-benzyl)-phenyl 320. ethyl 4-(2-methoxyethoxy)-phenyl 321. ethyl 4-(CH₂—N(CH₃)₂)-phenyl 322. ethyl 4-(NH—CO—NH₂)-phenyl 323. ethyl 4-(methylsulfanyl)-phenyl 324. ethyl 4-(fluoromethylsulfanyl)-phenyl 325. ethyl 4-(difluoromethylsulfanyl)-phenyl 326. ethyl 4-(trifluoromethylsulfanyl)-phenyl 327. ethyl 4-(methylsulfonyl)-phenyl 328. ethyl 4-(N-methoxy-N-methyl-amino)-phenyl 329. ethyl 4-(methoxyamino)-phenyl 330. ethyl 4-(ethoxyamino)-phenyl 331. ethyl 4-(N-methylaminooxy)-phenyl 332. ethyl 4-(N,N-dimethylaminooxy)-phenyl 333. ethyl 4-(azetidin-1-yl)-phenyl 334. ethyl 4-(2-methylazetidin-1-yl)-phenyl 335. ethyl 4-((S)-2-methylazetidin-1-yl)-phenyl 336. ethyl 4-((R)-2-methylazetidin-1-yl)-phenyl 337. ethyl 4-(3-fluoroazetidin-1-yl)-phenyl 338. ethyl 4-(3-methoxyazetidin-1-yl)-phenyl 339. ethyl 4-(3-hydroxyazetidin-1-yl)-phenyl 340. ethyl 4-(pyrrolidin-1-yl)-phenyl 341. ethyl 4-(pyrrolidin-2-yl)-phenyl 342. ethyl 4-((S)-pyrrolidin-2-yl)-phenyl 343. ethyl 4-((R)-pyrrolidin-2-yl)-phenyl 344. ethyl 4-(pyrrolidin-3-yl)-phenyl 345. ethyl 4-((S)-pyrrolidin-3-yl)-phenyl 346. ethyl 4-((R)-pyrrolidin-3-yl)-phenyl 347. ethyl 4-(2-fluoropyrrolidin-1-yl)-phenyl 348. ethyl 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl 349. ethyl 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl 350. ethyl 4-(3-fluoropyrrolidin-1-yl)-phenyl 351. ethyl 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl 352. ethyl 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl 353. ethyl 4-(2,2-difluoropyrrolidin-1-yl)-phenyl 354. ethyl 4-(3,3-difluoropyrrolidin-1-yl)-phenyl 355. ethyl 4-(2-methylpyrrolidin-1-yl)-phenyl 356. ethyl 4-((S)-2-methylpyrrolidin-1-yl)-phenyl 357. ethyl 4-((R)-2-methylpyrrolidin-1-yl)-phenyl 358. ethyl 4-(3-methylpyrrolidin-1-yl)-phenyl 359. ethyl 4-((S)-3-methylpyrrolidin-1-yl)-phenyl 360. ethyl 4-((R)-3-methylpyrrolidin-1-yl)-phenyl 361. ethyl 4-(1-methylpyrrolidin-2-yl)-phenyl 362. ethyl 4-((S)-1-methylpyrrolidin-2-yl)-phenyl 363. ethyl 4-((R)-1-methylpyrrolidin-2-yl)-phenyl 364. ethyl 4-(1-methylpyrrolidin-3-yl)-phenyl 365. ethyl 4-((S)-1-methylpyrrolidin-3-yl)-phenyl 366. ethyl 4-((R)-1-methylpyrrolidin-3-yl)-phenyl 367. ethyl 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl 368. ethyl 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl 369. ethyl 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl 370. ethyl 4-((S)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 371. ethyl 4-((R)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 372. ethyl 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl 373. ethyl 4-((S)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 374. ethyl 4-((R)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 375. ethyl 4-(2-oxopyrrolidin-1-yl)-phenyl 376. ethyl 4-(2-oxo-oxazolidin-3-yl)-phenyl 377. ethyl 4-(piperidin-1-yl)-phenyl 378. ethyl 4-(2-methylpiperidin-1-yl)-phenyl 379. ethyl 4-((S)-2-methylpiperidin-1-yl)-phenyl 380. ethyl 4-((R)-2-methylpiperidin-1-yl)-phenyl 381. ethyl 4-(piperazin-1-yl)-phenyl 382. ethyl 4-(4-methylpiperazin-1-yl)-phenyl 383. ethyl 4-(morpholin-4-yl)-phenyl 384. ethyl 4-(thiomorpholin-4-yl)-phenyl 385. ethyl 4-(1-oxo-thiomorpholin-4-yl)-phenyl 386. ethyl 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl 387. ethyl 4-(pyrrol-1-yl)-phenyl 388. ethyl 4-(pyrrol-2-yl)-phenyl 389. ethyl 4-(pyrrol-3-yl)-phenyl 390. ethyl 4-(1-methylpyrrol-2-yl)-phenyl 391. ethyl 4-(1-methylpyrrol-3-yl)-phenyl 392. ethyl 4-(furan-2-yl)-phenyl 393. ethyl 4-(furan-3-yl)-phenyl 394. ethyl 4-(thiophen-2-yl)-phenyl 395. ethyl 4-(thiophen-3-yl)-phenyl 396. ethyl 4-(5-propylthien-2-yl)-phenyl 397. ethyl 4-(pyrazol-1-yl)-phenyl 398. ethyl 4-(pyrazol-3-yl)-phenyl 399. ethyl 4-(pyrazol-4-yl)-phenyl 400. ethyl 4-(1-methyl-1H-pyrazol-4-yl)-phenyl 401. ethyl 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl 402. ethyl 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 403. ethyl 4-(1H-imidazol-2-yl)-phenyl 404. ethyl 4-(imidazol-1-yl)-phenyl 405. ethyl 4-(1-methylimidazol-2-yl)-phenyl 406. ethyl 4-(oxazol-2-yl)-phenyl 407. ethyl 4-(oxazol-4-yl)-phenyl 408. ethyl 4-(oxazol-5-yl)-phenyl 409. ethyl 4-(isoxazol-3-yl)-phenyl 410. ethyl 4-(isoxazol-4-yl)-phenyl 411. ethyl 4-(isoxazol-5-yl)-phenyl 412. ethyl 4-([1,2,3,]-triazol-1-yl)-phenyl 413. ethyl 4-([1,2,4,]-triazol-1-yl)-phenyl 414. ethyl 4-([1,2,3,]-triazol-2-yl)-phenyl 415. ethyl 4-(4H-[1,2,4,]-triazol-3-yl)-phenyl 416. ethyl 4-([1,2,4,]-triazol-4-yl)-phenyl 417. ethyl 4-(2H-[1,2,3,]-triazol-4-yl)-phenyl 418. ethyl 4-(4-methyl-4H-[1,2,4,]-triazol-3-yl)-phenyl 419. ethyl 4-(2-methyl-2H-[1,2,3,]-triazol-4-yl)-phenyl 420. ethyl 4-([1,3,4]-oxadiazol-2-yl)-phenyl 421. ethyl 4-([1,2,4]-oxadiazol-3-yl)-phenyl 422. ethyl 4-([1,2,4]-oxadiazol-5-yl)-phenyl 423. ethyl 4-([1,2,3]-oxadiazol-4-yl)-phenyl 424. ethyl 4-([1,2,3]-oxadiazol-5-yl)-phenyl 425. ethyl 4-([1,2,3]-thiadiazol-4-yl)-phenyl 426. ethyl 4-(1H-tetrazol-5-yl)-phenyl 427. ethyl 4-(tetrazol-1-yl)-phenyl 428. ethyl 4-(2-methyl-2H-tetrazol-5-yl)-phenyl 429. ethyl 4-(1-methyl-1H-tetrazol-5-yl)-phenyl 430. ethyl 4-furazan-3-yl-phenyl 431. ethyl 4-(pyrid-2-yl)-phenyl 432. ethyl 4-(pyrid-3-yl)-phenyl 433. ethyl 4-(pyrid-4-yl)-phenyl 434. ethyl 4-(pyrimidin-2-yl)-phenyl 435. ethyl 4-(pyrimidin-4-yl)-phenyl 436. ethyl 4-(pyrimidin-5-yl)-phenyl 437. ethyl 5-isopropylthiophen-2-yl 438. ethyl 2-chlorothiophen-5-yl 439. ethyl 2,5-dichlorothiophen-4-yl 440. ethyl 2,3-dichlorothiophen-5-yl 441. ethyl 2-chloro-3-nitrothiophen-5-yl 442. ethyl 2-(phenylsulfonyl)-thiophen-5-yl 443. ethyl 2-(pyridin-2-yl)thiophen-5-yl 444. ethyl 2-(5-(trifluoromethyl)isoxazol-3-yl)- thiophen-5-yl 445. ethyl 2-(2-methylthiazol-4-yl)-thiophen-5-yl 446. ethyl 1-methyl-1H-imidazol-4-yl 447. ethyl 1,2-dimethyl-1H-imidazol-4-yl 448. ethyl 3,5-dimethylisoxazol-4-yl 449. ethyl thiazol-2-yl 450. ethyl 4-methylthiazol-2-yl 451. ethyl 4-isopropylthiazol-2-yl 452. ethyl 4-trifluoromethylthiazol-2-yl 453. ethyl 5-methylthiazol-2-yl 454. ethyl 5-isopropylthiazol-2-yl 455. ethyl 5-trifluoromethylthiazol-2-yl 456. ethyl 2,4-dimethylthiazol-5-yl 457. ethyl 2-acetamido-4-methylthiazol-5-yl 458. ethyl 4H-[1,2,4]triazol-3-yl 459. ethyl 5-methyl-4H-[1,2,4]triazol-3-yl 460. ethyl 4-methyl-4H-[1,2,4]triazol-3-yl 461. ethyl 5-isopropyl-4H-[1,2,4]triazol-3-yl 462. ethyl 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl 463. ethyl 4,5-dimethyl-4H-[1,2,4]triazol-3-yl 464. ethyl 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl 465. ethyl 5-trifluoromethyl-4-methyl-4H-[1,2,4]triazol- 3-yl 466. ethyl [1,3,4]thiadiazol-2-yl 467. ethyl 5-methyl-[1,3,4]thiadiazol-2-yl 468. ethyl 5-isopropyl-[1,3,4]thiadiazol-2-yl 469. ethyl 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl 470. ethyl 3-bromo-2-chloropyrid-5-yl 471. ethyl 2-(4-morpholino)-pyrid-5-yl 472. ethyl 2-phenoxypyrid-5-yl 473. ethyl (2-isopropyl)-pyrimidin-5-yl 474. ethyl (5-isopropyl)-pyrimidin-2-yl 475. ethyl 8-quinolyl 476. ethyl 5-isoquinolyl 477. ethyl 2-(trifluoroacetyl)-1,2,3,4- tetrahydroisoquinolin-7-yl 478. ethyl 5-chloro-3-methylbenzothiophen-2-yl 479. ethyl 3,4-dihydro-4-methyl-2H- benzo[b][1,4]oxazinyl 480. ethyl benzothiazol-6-yl 481. ethyl benzo[2,1,3]oxadiazol-4-yl 482. ethyl 5-chlorobenzo[2,1,3]oxadiazol-4-yl 483. ethyl 7-chlorobenzo[2,1,3]oxadiazol-4-yl 484. ethyl benzo[2,1,3]thiadiazol-4-yl 485. methyl 4-methylphenyl 486. methyl 4-ethylphenyl 487. methyl 4-propylphenyl 488. methyl 4-isopropylphenyl 489. methyl 4-sec-butylphenyl 490. methyl 4-isobutylphenyl 491. methyl 4-(1,1-dimethylpropyl)-phenyl 492. methyl 4-vinylphenyl 493. methyl 4-isopropenylphenyl 494. methyl 4-fluorophenyl 495. methyl 4-chlorophenyl 496. methyl 4-bromophenyl 497. methyl 4-(fluoromethyl)phenyl 498. methyl 3-(fluoromethyl)phenyl 499. methyl 2-(fluoromethyl)phenyl 500. methyl 4-(difluoromethyl)phenyl 501. methyl 3-(difluoromethyl)phenyl 502. methyl 2-(difluoromethyl)phenyl 503. methyl 4-(trifluoromethyl)phenyl 504. methyl 3-(trifluoromethyl)phenyl 505. methyl 2-(trifluoromethyl)phenyl 506. methyl 4-(1-fluoroethyl)-phenyl 507. methyl 4-((S)-1-fluoroethyl)-phenyl 508. methyl 4-((R)-1-fluoroethyl)-phenyl 509. methyl 4-(2-fluoroethyl)-phenyl 510. methyl 4-(1,1-difluoroethyl)-phenyl 511. methyl 4-(2,2-difluoroethyl)-phenyl 512. methyl 4-(2,2,2-trifluoroethyl)-phenyl 513. methyl 4-(3-fluoropropyl)-phenyl 514. methyl 4-(2-fluoropropyl)-phenyl 515. methyl 4-((S)-2-fluoropropyl-phenyl 516. methyl 4-((R)-2-fluoropropyl-phenyl 517. methyl 4-(3,3-difluoropropyl)-phenyl 518. methyl 4-(3,3,3-trifluoropropyl)-phenyl 519. methyl 4-(1-fluoro-1-methylethyl)-phenyl 520. methyl 4-(2-fluoro-1-methylethyl)-phenyl 521. methyl 4-((S)-2-fluoro-1-methylethyl)-phenyl 522. methyl 4-((R)-2-fluoro-1-methylethyl)-phenyl 523. methyl 4-(2,2-difluoro-1-methylethyl)-phenyl 524. methyl 4-((S)-2,2-difluoro-1-methylethyl)-phenyl 525. methyl 4-((R)-2,2-difluoro-1-methylethyl)-phenyl 526. methyl 4-(2,2,2-trifluoro-1-methylethyl)-phenyl 527. methyl 4-((S)-2,2,2-trifluoro-1-methylethyl)-phenyl 528. methyl 4-((R)-2,2,2-trifluoro-1-methylethyl)-phenyl 529. methyl 4-(2-fluoro-1-fluoromethylethyl)-phenyl 530. methyl 4-(1-difluoromethyl-2,2-difluoroethyl)- phenyl 531. methyl 4-(1,1-dimethyl-2-fluoroethyl)-phenyl 532. methyl 4-methoxyphenyl 533. methyl 4-ethoxyphenyl 534. methyl 4-propoxyphenyl 535. methyl 4-isopropoxyphenyl 536. methyl 4-butoxyphenyl 537. methyl 4-(fluoromethoxy)-phenyl 538. methyl 4-(difluoromethoxy)-phenyl 539. methyl 4-(trifluoromethoxy)-phenyl 540. methyl 3-(trifluoromethoxy)-phenyl 541. methyl 4-(2-fluoroethoxy)-phenyl 542. methyl 4-(2,2-difluoroethoxy)-phenyl 543. methyl 4-(2,2,2-trifluoroethoxy)-phenyl 544. methyl 4-(1,1,2,2-tetrafluoroethoxy)-phenyl 545. methyl 4-cyclopropylphenyl 546. methyl 4-cyclobutylphenyl 547. methyl 4-cyclopentylphenyl 548. methyl 4-(2,2-difluorocyclopropyl)-phenyl 549. methyl 3,4-difluorophenyl 550. methyl 4-bromo-3-fluorophenyl 551. methyl 4-bromo-2-fluorophenyl 552. methyl 4-bromo-2,5-difluorophenyl 553. methyl 4-fluoro-4-isopropylphenyl 554. methyl 3-fluoro-4-isopropylphenyl 555. methyl 4-(1-hydroxy-1-methylethyl)-phenyl 556. methyl 4-(2-hydroxy-2-methylpropyl)-phenyl 557. methyl 4-acetylphenyl 558. methyl 4-carboxyphenyl 559. methyl 4-cyanophenyl 560. methyl 4-hydroxyphenyl 561. methyl 4-(O-benzyl)-phenyl 562. methyl 4-(2-methoxyethoxy)-phenyl 563. methyl 4-(CH₂—N(CH₃)₂)-phenyl 564. methyl 4-(NH—CO—NH₂)-phenyl 565. methyl 4-(methylsulfanyl)-phenyl 566. methyl 4-(fluoromethylsulfanyl)-phenyl 567. methyl 4-(difluoromethylsulfanyl)-phenyl 568. methyl 4-(trifluoromethylsulfanyl)-phenyl 569. methyl 4-(methylsulfonyl)-phenyl 570. methyl 4-(N-methoxy-N-methyl-amino)-phenyl 571. methyl 4-(methoxyamino)-phenyl 572. methyl 4-(ethoxyamino)-phenyl 573. methyl 4-(N-methylaminooxy)-phenyl 574. methyl 4-(N,N-dimethylaminooxy)-phenyl 575. methyl 4-(azetidin-1-yl)-phenyl 576. methyl 4-(2-methylazetidin-1-yl)-phenyl 577. methyl 4-((S)-2-methylazetidin-1-yl)-phenyl 578. methyl 4-((R)-2-methylazetidin-1-yl)-phenyl 579. methyl 4-(3-fluoroazetidin-1-yl)-phenyl 580. methyl 4-(3-methoxyazetidin-1-yl)-phenyl 581. methyl 4-(3-hydroxyazetidin-1-yl)-phenyl 582. methyl 4-(pyrrolidin-1-yl)-phenyl 583. methyl 4-(pyrrolidin-2-yl)-phenyl 584. methyl 4-((S)-pyrrolidin-2-yl)-phenyl 585. methyl 4-((R)-pyrrolidin-2-yl)-phenyl 586. methyl 4-(pyrrolidin-3-yl)-phenyl 587. methyl 4-((S)-pyrrolidin-3-yl)-phenyl 588. methyl 4-((R)-pyrrolidin-3-yl)-phenyl 589. methyl 4-(2-fluoropyrrolidin-1-yl)-phenyl 590. methyl 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl 591. methyl 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl 592. methyl 4-(3-fluoropyrrolidin-1-yl)-phenyl 593. methyl 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl 594. methyl 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl 595. methyl 4-(2,2-difluoropyrrolidin-1-yl)-phenyl 596. methyl 4-(3,3-difluoropyrrolidin-1-yl)-phenyl 597. methyl 4-(2-methylpyrrolidin-1-yl)-phenyl 598. methyl 4-((S)-2-methylpyrrolidin-1-yl)-phenyl 599. methyl 4-((R)-2-methylpyrrolidin-1-yl)-phenyl 600. methyl 4-(3-methylpyrrolidin-1-yl)-phenyl 601. methyl 4-((S)-3-methylpyrrolidin-1-yl)-phenyl 602. methyl 4-((R)-3-methylpyrrolidin-1-yl)-phenyl 603. methyl 4-(1-methylpyrrolidin-2-yl)-phenyl 604. methyl 4-((S)-1-methylpyrrolidin-2-yl)-phenyl 605. methyl 4-((R)-1-methylpyrrolidin-2-yl)-phenyl 606. methyl 4-(1-methylpyrrolidin-3-yl)-phenyl 607. methyl 4-((S)-1-methylpyrrolidin-3-yl)-phenyl 608. methyl 4-((R)-1-methylpyrrolidin-3-yl)-phenyl 609. methyl 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl 610. methyl 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl 611. methyl 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl 612. methyl 4-((S)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 613. methyl 4-((R)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 614. methyl 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl 615. methyl 4-((S)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 616. methyl 4-((R)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 617. methyl 4-(2-oxopyrrolidin-1-yl)-phenyl 618. methyl 4-(2-oxo-oxazolidin-3-yl)-phenyl 619. methyl 4-(2-piperidin-1-yl)-phenyl 620. methyl 4-(2-methylpiperidin-1-yl)-phenyl 621. methyl 4-((S)-2-methylpiperidin-1-yl)-phenyl 622. methyl 4-((R)-2-methylpiperidin-1-yl)-phenyl 623. methyl 4-(piperazin-1-yl)-phenyl 624. methyl 4-(4-methylpiperazin-1-yl)-phenyl 625. methyl 4-(morpholin-4-yl)-phenyl 626. methyl 4-(thiomorpholin-4-yl)-phenyl 627. methyl 4-(1-oxo-thiomorpholin-4-yl)-phenyl 628. methyl 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl 629. methyl 4-(pyrrol-1-yl)-phenyl 630. methyl 4-(pyrrol-2-yl)-phenyl 631. methyl 4-(pyrrol-3-yl)-phenyl 632. methyl 4-(1-methylpyrrol-2-yl)-phenyl 633. methyl 4-(1-methylpyrrol-3-yl)-phenyl 634. methyl 4-(furan-2-yl)-phenyl 635. methyl 4-(furan-3-yl)-phenyl 636. methyl 4-(thiophen-2-yl)-phenyl 637. methyl 4-(thiophen-3-yl)-phenyl 638. methyl 4-(5-propylthien-2-yl)-phenyl 639. methyl 4-(pyrazol-1-yl)-phenyl 640. methyl 4-(pyrazol-3-yl)-phenyl 641. methyl 4-(pyrazol-4-yl)-phenyl 642. methyl 4-(1-methyl-1H-pyrazol-4-yl)-phenyl 643. methyl 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl 644. methyl 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 645. methyl 4-(1H-imidazol-2-yl)-phenyl 646. methyl 4-(imidazol-1-yl)-phenyl 647. methyl 4-(1-methylimidazol-2-yl)-phenyl 648. methyl 4-(oxazol-2-yl)-phenyl 649. methyl 4-(oxazol-4-yl)-phenyl 650. methyl 4-(oxazol-5-yl)-phenyl 651. methyl 4-(isoxazol-3-yl)-phenyl 652. methyl 4-(isoxazol-4-yl)-phenyl 653. methyl 4-(isoxazol-5-yl)-phenyl 654. methyl 4-([1,2,3]-triazol-1-yl)-phenyl 655. methyl 4-([1,2,4]-triazol-1-yl)-phenyl 656. methyl 4-([1,2,3]-triazol-2-yl)-phenyl 657. methyl 4-(4H-[1,2,4]-triazol-3-yl)-phenyl 658. methyl 4-([1,2,4]-triazol-4-yl)-phenyl 659. methyl 4-(2H-[1,2,3]-triazol-4-yl)-phenyl 660. methyl 4-(4-methyl-4H-[1,2,4]-triazol-3-yl)-phenyl 661. methyl 4-(2-methyl-2H-[1,2,3]-triazol-4-yl)-phenyl 662. methyl 4-([1,3,4]-oxadiazol-2-yl)-phenyl 663. methyl 4-([1,2,4]-oxadiazol-3-yl)-phenyl 664. methyl 4-([1,2,4]-oxadiazol-5-yl)-phenyl 665. methyl 4-([1,2,3]-oxadiazol-4-yl)-phenyl 666. methyl 4-([1,2,3]-oxadiazol-5-yl)-phenyl 667. methyl 4-([1,2,3]-thiadiazol-4-yl)-phenyl 668. methyl 4-(1H-tetrazol-5-yl)-phenyl 669. methyl 4-(tetrazol-1-yl)-phenyl 670. methyl 4-(2-methyl-2H-tetrazol-5-yl)-phenyl 671. methyl 4-(1-methyl-1H-tetrazol-5-yl)-phenyl 672. methyl 4-furazan-3-yl-phenyl 673. methyl 4-(pyrid-2-yl)-phenyl 674. methyl 4-(pyrid-3-yl)-phenyl 675. methyl 4-(pyrid-4-yl)-phenyl 676. methyl 4-(pyrimidin-2-yl)-phenyl 677. methyl 4-(pyrimidin-4-yl)-phenyl 678. methyl 4-(pyrimidin-5-yl)-phenyl 679. methyl 5-isopropylthiophen-2-yl 680. methyl 2-chlorothiophen-5-yl 681. methyl 2,5-dichlorothiophen-4-yl 682. methyl 2,3-dichlorothiophen-5-yl 683. methyl 2-chloro-3-nitrothiophen-5-yl 684. methyl 2-(phenylsulfonyl)-thiophen-5-yl 685. methyl 2-(pyridin-2-yl)thiophen-5-yl 686. methyl 2-(5-(trifluoromethyl)isoxazol-3-yl)- thiophen-5-yl 687. methyl 2-(2-methylthiazol-4-yl)-thiophen-5-yl 688. methyl 1-methyl-1H-imidazol-4-yl 689. methyl 1,2-dimethyl-1H-imidazol-4-yl 690. methyl 3,5-dimethylisoxazol-4-yl 691. methyl thiazol-2-yl 692. methyl 4-methylthiazol-2-yl 693. methyl 4-isopropylthiazol-2-yl 694. methyl 4-trifluoromethylthiazol-2-yl 695. methyl 5-methylthiazol-2-yl 696. methyl 5-isopropylthiazol-2-yl 697. methyl 5-trifluoromethylthiazol-2-yl 698. methyl 2,4-dimethylthiazol-5-yl 699. methyl 2-acetamido-4-methylthiazol-5-yl 700. methyl 4H-[1,2,4]triazol-3-yl 701. methyl 5-methyl-4H-[1,2,4]triazol-3-yl 702. methyl 4-methyl-4H-[1,2,4]triazol-3-yl 703. methyl 5-isopropyl-4H-[1,2,4]triazol-3-yl 704. methyl 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl 705. methyl 4,5-dimethyl-4H-[1,2,4]triazol-3-yl 706. methyl 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl 707. methyl 5-trifluoromethyl-4-methyl-4H- [1,2,4]triazol-3-yl 708. methyl [1,3,4]thiadiazol-2-yl 709. methyl 5-methyl-[1,3,4]thiadiazol-2-yl 710. methyl 5-isopropyl-[1,3,4]thiadiazol-2-yl 711. methyl 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl 712. methyl 3-bromo-2-chloropyrid-5-yl 713. methyl 2-(4-morpholino)-pyrid-5-yl 714. methyl 2-phenoxypyrid-5-yl 715. methyl (2-isopropyl)-pyrimidin-5-yl 716. methyl (5-isopropyl)-pyrimidin-2-yl 717. methyl 8-quinolyl 718. methyl 5-isoquinolyl 719. methyl 2-(trifluoroacetyl)-1,2,3,4- tetrahydroisoquinolin-7-yl 720. methyl 5-chloro-3-methylbenzothiophen-2-yl 721. methyl 3,4-dihydro-4-methyl-2H- benzo[b][1,4]oxazinyl 722. methyl benzothiazol-6-yl 723. methyl benzo[2,1,3]oxadiazol-4-yl 724. methyl 5-chlorobenzo[2,1,3]oxadiazol-4-yl 725. methyl 7-chlorobenzo[2,1,3]oxadiazol-4-yl 726. methyl benzo[2,1,3]thiadiazol-4-yl 727. H 4-methylphenyl 728. H 4-ethylphenyl 729. H 4-propylphenyl 730. H 4-isopropylphenyl 731. H 4-sec-butylphenyl 732. H 4-isobutylphenyl 733. H 4-(1,1-dimethylpropyl)-phenyl 734. H 4-vinylphenyl 735. H 4-isopropenylphenyl 736. H 4-fluorophenyl 737. H 4-chlorophenyl 738. H 4-bromophenyl 739. H 4-(fluoromethyl)phenyl 740. H 3-(fluoromethyl)phenyl 741. H 2-(fluoromethyl)phenyl 742. H 4-(difluoromethyl)phenyl 743. H 3-(difluoromethyl)phenyl 744. H 2-(difluoromethyl)phenyl 745. H 4-(trifluoromethyl)phenyl 746. H 3-(trifluoromethyl)phenyl 747. H 2-(trifluoromethyl)phenyl 748. H 4-(1-fluoroethyl)-phenyl 749. H 4-((S)-1-fluoroethyl)-phenyl 750. H 4-((R)-1-fluoroethyl)-phenyl 751. H 4-(2-fluoroethyl)-phenyl 752. H 4-(1,1-difluoroethyl)-phenyl 753. H 4-(2,2-difluoroethyl)-phenyl 754. H 4-(2,2,2-trifluoroethyl)-phenyl 755. H 4-(3-fluoropropyl)-phenyl 756. H 4-(2-fluoropropyl)-phenyl 757. H 4-((S)-2-fluoropropyl)-phenyl 758. H 4-((R)-2-fluoropropyl)-phenyl 759. H 4-(3,3-difluoropropyl)-phenyl 760. H 4-(3,3,3-trifluoropropyl)-phenyl 761. H 4-(1-fluoro-1-methylethyl)-phenyl 762. H 4-(2-fluoro-1-methylethyl)-phenyl 763. H 4-((S)-2-fluoro-1-methylethyl)-phenyl 764. H 4-((R)-2-fluoro-1-methylethyl)-phenyl 765. H 4-(2,2-difluoro-1-methylethyl)-phenyl 766. H 4-((S)-2,2-difluoro-1-methylethyl)-phenyl 767. H 4-((R)-2,2-difluoro-1-methylethyl)-phenyl 768. H 4-(2,2,2-trifluoro-1-methylethyl)-phenyl 769. H 4-((S)-2,2,2-trifluoro-1-methylethyl)- phenyl 770. H 4-((R)-2,2,2-trifluoro-1-methylethyl)- phenyl 771. H 4-(2-fluoro-1-fluoromethylethyl)-phenyl 772. H 4-(1-difluoromethyl-2,2-difluoroethyl)- phenyl 773. H 4-(1,1-dimethyl-2-fluoroethyl)-phenyl 774. H 4-methoxyphenyl 775. H 4-ethoxyphenyl 776. H 4-propoxyphenyl 777. H 4-isopropoxyphenyl 778. H 4-butoxyphenyl 779. H 4-(fluoromethoxy)-phenyl 780. H 4-(difluoromethoxy)-phenyl 781. H 4-(trifluoromethoxy)-phenyl 782. H 3-(trifluoromethoxy)-phenyl 783. H 4-(2-fluoroethoxy)-phenyl 784. H 4-(2,2-difluoroethoxy)-phenyl 785. H 4-(2,2,2-trifluoroethoxy)-phenyl 786. H 4-(1,1,2,2-tetrafluoroethoxy)-phenyl 787. H 4-cyclopropylphenyl 788. H 4-cyclobutylphenyl 789. H 4-cyclopentylphenyl 790. H 4-(2,2-difluorocyclopropyl)-phenyl 791. H 3,4-difluorophenyl 792. H 4-bromo-3-fluorophenyl 793. H 4-bromo-2-fluorophenyl 794. H 4-bromo-2,5-difluorophenyl 795. H 2-fluoro-4-isopropylphenyl 796. H 3-fluoro-4-isopropylphenyl 797. H 4-(1-hydroxy-1-methylethyl)-phenyl 798. H 4-(2-hydroxy-2-methylpropyl)-phenyl 799. H 4-acetylphenyl 800. H 4-carboxyphenyl 801. H 4-cyanophenyl 802. H 4-hydroxyphenyl 803. H 4-(O-benzyl)-phenyl 804. H 4-(2-methoxyethoxy)-phenyl 805. H 4-(CH₂—N(CH₃)₂)-phenyl 806. H 4-(NH—CO—NH₂)-phenyl 807. H 4-(methylsulfanyl)-phenyl 808. H 4-(fluoromethylsulfanyl)-phenyl 809. H 4-(difluoromethylsulfanyl)-phenyl 810. H 4-(trifluoromethylsulfanyl)-phenyl 811. H 4-(methylsulfonyl)-phenyl 812. H 4-(N-methoxy-N-methyl-amino)-phenyl 813. H 4-(methoxyamino)-phenyl 814. H 4-(ethoxyamino)-phenyl 815. H 4-(N-methylaminooxy)-phenyl 816. H 4-(N,N-dimethylaminooxy)-phenyl 817. H 4-(azetidin-1-yl)-phenyl 818. H 4-(2-methylazetidin-1-yl)-phenyl 819. H 4-((S)-2-methylazetidin-1-yl)-phenyl 820. H 4-((R)-2-methylazetidin-1-yl)-phenyl 821. H 4-(3-fluoroazetidin-1-yl)-phenyl 822. H 4-(3-methoxyazetidin-1-yl)-phenyl 823. H 4-(3-hydroxyazetidin-1-yl)-phenyl 824. H 4-(pyrrolidin-1-yl)-phenyl 825. H 4-(pyrrolidin-2-yl)-phenyl 826. H 4-((S)-pyrrolidin-2-yl)-phenyl 827. H 4-((R)-pyrrolidin-2-yl)-phenyl 828. H 4-(pyrrolidin-3-yl)-phenyl 829. H 4-((S)-pyrrolidin-3-yl)-phenyl 830. H 4-((R)-pyrrolidin-3-yl)-phenyl 831. H 4-(2-fluoropyrrolidin-1-yl)-phenyl 832. H 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl 833. H 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl 834. H 4-(3-fluoropyrrolidin-1-yl)-phenyl 835. H 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl 836. H 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl 837. H 4-(2,2-difluoropyrrolidin-1-yl)-phenyl 838. H 4-(3,3-difluoropyrrolidin-1-yl)-phenyl 839. H 4-(2-methylpyrrolidin-1-yl)-phenyl 840. H 4-((S)-2-methylpyrrolidin-1-yl)-phenyl 841. H 4-((R)-2-methylpyrrolidin-1-yl)-phenyl 842. H 4-(3-methylpyrrolidin-1-yl)-phenyl 843. H 4-((S)-3-methylpyrrolidin-1-yl)-phenyl 844. H 4-((R)-3-methylpyrrolidin-1-yl)-phenyl 845. H 4-(1-methylpyrrolidin-2-yl)-phenyl 846. H 4-((S)-1-methylpyrrolidin-2-yl)-phenyl 847. H 4-((R)-1-methylpyrrolidin-2-yl)-phenyl 848. H 4-(1-methylpyrrolidin-3-yl)-phenyl 849. H 4-((S)-1-methylpyrrolidin-3-yl)-phenyl 850. H 4-((R)-1-methylpyrrolidin-3-yl)-phenyl 851. H 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl 852. H 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl 853. H 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl 854. H 4-((S)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 855. H 4-((R)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 856. H 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl 857. H 4-((S)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 858. H 4-((R)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 859. H 4-(2-oxopyrrolidin-1-yl)-phenyl 860. H 4-(2-oxo-oxazolidin-3-yl)-phenyl 861. H 4-(piperidin-1-yl)-phenyl 862. H 4-(2-methylpiperidin-1-yl)-phenyl 863. H 4-((S)-2-methylpiperidin-1-yl)-phenyl 864. H 4-((R)-2-methylpiperidin-1-yl)-phenyl 865. H 4-(piperazin-1-yl)-phenyl 866. H 4-(4-methylpiperazin-1-yl)-phenyl 867. H 4-(morpholin-4-yl)-phenyl 868. H 4-(thiomorpholin-4-yl)-phenyl 869. H 4-(1-oxo-thiomorpholin-4-yl)-phenyl 870. H 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl 871. H 4-(pyrrol-1-yl)-phenyl 872. H 4-(pyrrol-2-yl)-phenyl 873. H 4-(pyrrol-3-yl)-phenyl 874. H 4-(1-methylpyrrol-2-yl)-phenyl 875. H 4-(1-methylpyrrol-3-yl)-phenyl 876. H 4-(furan-2-yl)-phenyl 877. H 4-(furan-3-yl)-phenyl 878. H 4-(thiophen-2-yl)-phenyl 879. H 4-(thiophen-3-yl)-phenyl 880. H 4-(5-propylthien-2-yl)-phenyl 881. H 4-(pyrazol-1-yl)-phenyl 882. H 4-(pyrazol-3-yl)-phenyl 883. H 4-(pyrazol-4-yl)-phenyl 884. H 4-(1-methyl-1H-pyrazol-4-yl)-phenyl 885. H 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl 886. H 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 887. H 4-(1H-imidazol-2-yl)-phenyl 888. H 4-(imidazol-1-yl)-phenyl 889. H 4-(1-methylimidazol-2-yl)-phenyl 890. H 4-(oxazol-2-yl)-phenyl 891. H 4-(oxazol-4-yl)-phenyl 892. H 4-(oxazol-5-yl)-phenyl 893. H 4-(isoxazol-3-yl)-phenyl 894. H 4-(isoxazol-4-yl)-phenyl 895. H 4-(isoxazol-5-yl)-phenyl 896. H 4-([1,2,3]-triazol-1-yl)-phenyl 897. H 4-([1,2,4]-triazol-1-yl)-phenyl 898. H 4-([1,2,3]-triazol-2-yl)-phenyl 899. H 4-(4H-[1,2,4]-triazol-3-yl)-phenyl 900. H 4-([1,2,4]-triazol-4-yl)-phenyl 901. H 4-(2H-[1,2,3]-triazol-4-yl)-phenyl 902. H 4-(4-methyl-4H-[1,2,4]-triazol-3-yl)-phenyl 903. H 4-(2-methyl-2H-[1,2,3]-triazol-4-yl)-phenyl 904. H 4-([1,3,4]-oxadiazol-2-yl)-phenyl 905. H 4-([1,2,4]-oxadiazol-3-yl)-phenyl 906. H 4-([1,2,4]-oxadiazol-5-yl)-phenyl 907. H 4-([1,2,3]-oxadiazol-4-yl)-phenyl 908. H 4-([1,2,3]-oxadiazol-5-yl)-phenyl 909. H 4-([1,2,3]-thiadiazol-4-yl)-phenyl 910. H 4-(1H-tetrazol-5-yl)-phenyl 911. H 4-(tetrazol-1-yl)-phenyl 912. H 4-(2-methyl-2H-tetrazol-5-yl)-phenyl 913. H 4-(1-methyl-1H-tetrazol-5-yl)-phenyl 914. H 4-furazan-3-yl-phenyl 915. H 4-(pyrid-2-yl)-phenyl 916. H 4-(pyrid-3-yl)-phenyl 917. H 4-(pyrid-4-yl)-phenyl 918. H 4-(pyrimidin-2-yl)-phenyl 919. H 4-(pyrimidin-4-yl)-phenyl 920. H 4-(pyrimidin-5-yl)-phenyl 921. H 5-isopropylthiophen-2-yl 922. H 2-chlorothiophen-5-yl 923. H 2,5-dichlorothiophen-4-yl 924. H 2,3-dichlorothiophen-5-yl 925. H 2-chloro-3-nitrothiophen-5-yl 926. H 2-(phenylsulfonyl)-thiophen-5-yl 927. H 2-(pyridin-2-yl)thiophen-5-yl 928. H 2-(5-(trifluoromethyl)isoxazol-3-yl)- thiophen-5-yl 929. H 2-(2-methylthiazol-4-yl)-thiophen-5-yl 930. H 1-methyl-1H-imidazol-4-yl 931. H 1,2-dimethyl-1H-imidazol-4-yl 932. H 3,5-dimethylisoxazol-4-yl 933. H thiazol-2-yl 934. H 4-methylthiazol-2-yl 935. H 4-isopropylthiazol-2-yl 936. H 4-trifluoromethylthiazol-2-yl 937. H 5-methylthiazol-2-yl 938. H 5-isopropylthiazol-2-yl 939. H 5-trifluoromethylthiazol-2-yl 940. H 2,4-dimethylthiazol-5-yl 941. H 2-acetamido-4-methylthiazol-5-yl 942. H 4H-[1,2,4]triazol-3-yl 943. H 5-methyl-4H-[1,2,4]triazol-3-yl 944. H 4-methyl-4H-[1,2,4]triazol-3-yl 945. H 5-isopropyl-4H-[1,2,4]triazol-3-yl 946. H 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl 947. H 4,5-dimethyl-4H-[1,2,4]triazol-3-yl 948. H 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl 949. H 5-trifluoromethyl-4-methyl-4H- [1,2,4]triazol-3-yl 950. H [1,3,4]thiadiazol-2-yl 951. H 5-methyl-[1,3,4]thiadiazol-2-yl 952. H 5-isopropyl-[1,3,4]thiadiazol-2-yl 953. H 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl 954. H 3-bromo-2-chloropyrid-5-yl 955. H 2-(4-morpholino)-pyrid-5-yl 956. H 2-phenoxypyrid-5-yl 957. H (2-isopropyl)-pyrimidin-5-yl 958. H (5-isopropyl)-pyrimidin-2-yl 959. H 8-quinolyl 960. H 5-isoquinolyl 961. H 2-(trifluoroacetyl)-1,2,3,4- tetrahydroisoquinolin-7-yl 962. H 5-chloro-3-methylbenzothiophen-2-yl 963. H 3,4-dihydro-4-methyl-2H- benzo[b][1,4]oxazinyl 964. H benzothiazol-6-yl 965. H benzo[2,1,3]oxadiazol-4-yl 966. H 5-chlorobenzo[2,1,3]oxadiazol-4-yl 967. H 7-chlorobenzo[2,1,3]oxadiazol-4-yl 968. H benzo[2,1,3]thiadiazol-4-yl 969. 3-fluoropropyl 4-methylphenyl 970. 3-fluoropropyl 4-ethylphenyl 971. 3-fluoropropyl 4-propylphenyl 972. 3-fluoropropyl 4-isopropylphenyl 973. 3-fluoropropyl 4-sec-butylphenyl 974. 3-fluoropropyl 4-isobutylphenyl 975. 3-fluoropropyl 4-(1,1-dimethylpropyl)-phenyl 976. 3-fluoropropyl 4-vinylphenyl 977. 3-fluoropropyl 4-isopropenylphenyl 978. 3-fluoropropyl 4-fluorophenyl 979. 3-fluoropropyl 4-chlorophenyl 980. 3-fluoropropyl 4-bromophenyl 981. 3-fluoropropyl 4-(fluoromethyl)phenyl 982. 3-fluoropropyl 3-(fluoromethyl)phenyl 983. 3-fluoropropyl 2-(fluoromethyl)phenyl 984. 3-fluoropropyl 4-(difluoromethyl)phenyl 985. 3-fluoropropyl 3-(difluoromethyl)phenyl 986. 3-fluoropropyl 2-(difluoromethyl)phenyl 987. 3-fluoropropyl 4-(trifluoromethyl)phenyl 988. 3-fluoropropyl 3-(trifluoromethyl)phenyl 989. 3-fluoropropyl 2-(trifluoromethyl)phenyl 990. 3-fluoropropyl 4-(1-fluoroethyl)-phenyl 991. 3-fluoropropyl 4-((S)-1-fluoroethyl)-phenyl 992. 3-fluoropropyl 4-((R)-1-fluoroethyl)-phenyl 993. 3-fluoropropyl 4-(2-fluoroethyl)-phenyl 994. 3-fluoropropyl 4-(1,1-difluoroethyl)-phenyl 995. 3-fluoropropyl 4-(2,2-difluoroethyl)-phenyl 996. 3-fluoropropyl 4-(2,2,2-trifluoroethyl)-phenyl 997. 3-fluoropropyl 4-(3-fluoropropyl)-phenyl 998. 3-fluoropropyl 4-(2-fluoropropyl)-phenyl 999. 3-fluoropropyl 4-((S)-2-fluoropropyl)-phenyl 1000. 3-fluoropropyl 4-((R)-2-fluoropropyl)-phenyl 1001. 3-fluoropropyl 4-(3,3-difluoropropyl)-phenyl 1002. 3-fluoropropyl 4-(3,3,3-trifluoropropyl)-phenyl 1003. 3-fluoropropyl 4-(1-fluoro-1-methylethyl)-phenyl 1004. 3-fluoropropyl 4-(2-fluoro-1-methylethyl)-phenyl 1005. 3-fluoropropyl 4-((S)-2-fluoro-1-methylethyl)-phenyl 1006. 3-fluoropropyl 4-((R)-2-fluoro-1-methylethyl)-phenyl 1007. 3-fluoropropyl 4-(2,2-difluoro-1-methylethyl)-phenyl 1008. 3-fluoropropyl 4-((S)-2,2-difluoro-1-methylethyl)-phenyl 1009. 3-fluoropropyl 4-((R)-2,2-difluoro-1-methylethyl)-phenyl 1010. 3-fluoropropyl 4-(2,2,2-trifluoro-1-methylethyl)-phenyl 1011. 3-fluoropropyl 4-((S)-2,2,2-trifluoro-1-methylethyl)-phenyl 1012. 3-fluoropropyl 4-((R)-2,2,2-trifluoro-1-methylethyl)-phenyl 1013. 3-fluoropropyl 4-(2-fluoro-1-fluoromethylethyl)-phenyl 1014. 3-fluoropropyl 4-(1-difluoromethyl-2,2-difluoroethyl)- phenyl 1015. 3-fluoropropyl 4-(1,1-dimethyl-2-fluoroethyl)-phenyl 1016. 3-fluoropropyl 4-methoxyphenyl 1017. 3-fluoropropyl 4-ethoxyphenyl 1018. 3-fluoropropyl 4-propoxyphenyl 1019. 3-fluoropropyl 4-isopropoxyphenyl 1020. 3-fluoropropyl 4-butoxyphenyl 1021. 3-fluoropropyl 4-(fluoromethoxy)-phenyl 1022. 3-fluoropropyl 4-(difluoromethoxy)-phenyl 1023. 3-fluoropropyl 4-(trifluoromethoxy)-phenyl 1024. 3-fluoropropyl 3-(trifluoromethoxy)-phenyl 1025. 3-fluoropropyl 4-(2-fluoroethoxy)-phenyl 1026. 3-fluoropropyl 4-(2,2-difluoroethoxy)-phenyl 1027. 3-fluoropropyl 4-(2,2,2-trifluoroethoxy)-phenyl 1028. 3-fluoropropyl 4-(1,1,2,2-tetrafluoroethoxy)-phenyl 1029. 3-fluoropropyl 4-cyclopropylphenyl 1030. 3-fluoropropyl 4-cyclobutylphenyl 1031. 3-fluoropropyl 4-cyclopentylphenyl 1032. 3-fluoropropyl 4-(2,2-difluorocyclopropyl)-phenyl 1033. 3-fluoropropyl 3,4-difluorophenyl 1034. 3-fluoropropyl 4-bromo-3-fluorophenyl 1035. 3-fluoropropyl 4-bromo-2-fluorophenyl 1036. 3-fluoropropyl 4-bromo-2,5-difluorophenyl 1037. 3-fluoropropyl 2-fluoro-4-isopropylphenyl 1038. 3-fluoropropyl 3-fluoro-4-isopropylphenyl 1039. 3-fluoropropyl 4-(1-hydroxy-1-methylethyl)-phenyl 1040. 3-fluoropropyl 4-(2-hydroxy-2-methylpropyl)-phenyl 1041. 3-fluoropropyl 4-acetylphenyl 1042. 3-fluoropropyl 4-carboxyphenyl 1043. 3-fluoropropyl 4-cyanophenyl 1044. 3-fluoropropyl 4-hydroxyphenyl 1045. 3-fluoropropyl 4-(O-benzyl)-phenyl 1046. 3-fluoropropyl 4-(2-methoxyethoxy)-phenyl 1047. 3-fluoropropyl 4-(CH₂—N(CH₃)₂)-phenyl 1048. 3-fluoropropyl 4-(NH—CO—NH₂)-phenyl 1049. 3-fluoropropyl 4-(methylsulfanyl)-phenyl 1050. 3-fluoropropyl 4-(fluoromethylsulfanyl)-phenyl 1051. 3-fluoropropyl 4-(difluoromethylsulfanyl)-phenyl 1052. 3-fluoropropyl 4-(trifluoromethylsulfanyl)-phenyl 1053. 3-fluoropropyl 4-(methylsulfonyl)-phenyl 1054. 3-fluoropropyl 4-(N-methoxy-N-methyl-amino)-phenyl 1055. 3-fluoropropyl 4-(methoxyamino)-phenyl 1056. 3-fluoropropyl 4-(ethoxyamino)-phenyl 1057. 3-fluoropropyl 4-(N-methylaminooxy)-phenyl 1058. 3-fluoropropyl 4-(N,N-dimethylaminooxy)-phenyl 1059. 3-fluoropropyl 4-(azetidin-1-yl)-phenyl 1060. 3-fluoropropyl 4-(2-methylazetidin-1-yl)-phenyl 1061. 3-fluoropropyl 4-((S)-2-methylazetidin-1-yl)-phenyl 1062. 3-fluoropropyl 4-((R)-2-methylazetidin-1-yl)-phenyl 1063. 3-fluoropropyl 4-(3-fluoroazetidin-1-yl)-phenyl 1064. 3-fluoropropyl 4-(3-methoxyazetidin-1-yl)-phenyl 1065. 3-fluoropropyl 4-(3-hydroxyazetidin-1-yl)-phenyl 1066. 3-fluoropropyl 4-(pyrrolidin-1-yl)-phenyl 1067. 3-fluoropropyl 4-(pyrrolidin-2-yl)-phenyl 1068. 3-fluoropropyl 4-((S)-pyrrolidin-2-yl)-phenyl 1069. 3-fluoropropyl 4-((R)-pyrrolidin-2-yl)-phenyl 1070. 3-fluoropropyl 4-(pyrrolidin-3-yl)-phenyl 1071. 3-fluoropropyl 4-((S)-pyrrolidin-3-yl)-phenyl 1072. 3-fluoropropyl 4-((R)-pyrrolidin-3-yl)-phenyl 1073. 3-fluoropropyl 4-(2-fluoropyrrolidin-1-yl)-phenyl 1074. 3-fluoropropyl 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl 1075. 3-fluoropropyl 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl 1076. 3-fluoropropyl 4-(3-fluoropyrrolidin-1-yl)-phenyl 1077. 3-fluoropropyl 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl 1078. 3-fluoropropyl 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl 1079. 3-fluoropropyl 4-(2,2-difluoropyrrolidin-1-yl)-phenyl 1080. 3-fluoropropyl 4-(3,3-difluoropyrrolidin-1-yl)-phenyl 1081. 3-fluoropropyl 4-(2-methylpyrrolidin-1-yl)-phenyl 1082. 3-fluoropropyl 4-((S)-2-methylpyrrolidin-1-yl)-phenyl 1083. 3-fluoropropyl 4-((R)-2-methylpyrrolidin-1-yl)-phenyl 1084. 3-fluoropropyl 4-(3-methylpyrrolidin-1-yl)-phenyl 1085. 3-fluoropropyl 4-((S)-3-methylpyrrolidin-1-yl)-phenyl 1086. 3-fluoropropyl 4-((R)-3-methylpyrrolidin-1-yl)-phenyl 1087. 3-fluoropropyl 4-(1-methylpyrrolidin-2-yl)-phenyl 1088. 3-fluoropropyl 4-((S)-1-methylpyrrolidin-2-yl)-phenyl 1089. 3-fluoropropyl 4-((R)-1-methylpyrrolidin-2-yl)-phenyl 1090. 3-fluoropropyl 4-(1-methylpyrrolidin-3-yl)-phenyl 1091. 3-fluoropropyl 4-((S)-1-methylpyrrolidin-3-yl)-phenyl 1092. 3-fluoropropyl 4-((R)-1-methylpyrrolidin-3-yl)-phenyl 1093. 3-fluoropropyl 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl 1094. 3-fluoropropyl 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl 1095. 3-fluoropropyl 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl 1096. 3-fluoropropyl 4-((S)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 1097. 3-fluoropropyl 4-((R)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 1098. 3-fluoropropyl 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl 1099. 3-fluoropropyl 4-((S)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 1100. 3-fluoropropyl 4-((R)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 1101. 3-fluoropropyl 4-(2-oxopyrrolidin-1-yl)-phenyl 1102. 3-fluoropropyl 4-(2-oxo-oxazolidin-3-yl)-phenyl 1103. 3-fluoropropyl 4-(piperidin-1-yl)-phenyl 1104. 3-fluoropropyl 4-(2-methylpiperidin-1-yl)-phenyl 1105. 3-fluoropropyl 4-((S)-2-methylpiperidin-1-yl)-phenyl 1106. 3-fluoropropyl 4-((R)-2-methylpiperidin-1-yl)-phenyl 1107. 3-fluoropropyl 4-(piperazin-1-yl)-phenyl 1108. 3-fluoropropyl 4-(4-methylpiperazin-1-yl)-phenyl 1109. 3-fluoropropyl 4-(morpholin-4-yl)-phenyl 1110. 3-fluoropropyl 4-(thiomorpholin-4-yl)-phenyl 1111. 3-fluoropropyl 4-(1-oxo-thiomorpholin-4-yl)-phenyl 1112. 3-fluoropropyl 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl 1113. 3-fluoropropyl 4-(pyrrol-1-yl)-phenyl 1114. 3-fluoropropyl 4-(pyrrol-2-yl)-phenyl 1115. 3-fluoropropyl 4-(pyrrol-3-yl)-phenyl 1116. 3-fluoropropyl 4-(1-methylpyrrol-2-yl)-phenyl 1117. 3-fluoropropyl 4-(1-methylpyrrol-3-yl)-phenyl 1118. 3-fluoropropyl 4-(furan-2-yl)-phenyl 1119. 3-fluoropropyl 4-(furan-3-yl)-phenyl 1120. 3-fluoropropyl 4-(thiophen-2-yl)-phenyl 1121. 3-fluoropropyl 4-(thiophen-3-yl)-phenyl 1122. 3-fluoropropyl 4-(5-propylthien-2-yl)-phenyl 1123. 3-fluoropropyl 4-(pyrazol-1-yl)-phenyl 1124. 3-fluoropropyl 4-(pyrazol-3-yl)-phenyl 1125. 3-fluoropropyl 4-(pyrazol-4-yl)-phenyl 1126. 3-fluoropropyl 4-(1-methyl-1H-pyrazol-4-yl)-phenyl 1127. 3-fluoropropyl 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl 1128. 3-fluoropropyl 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 1129. 3-fluoropropyl 4-(1H-imidazol-2-yl)-phenyl 1130. 3-fluoropropyl 4-(imidazol-1-yl)-phenyl 1131. 3-fluoropropyl 4-(1-methylimidazol-2-yl)-phenyl 1132. 3-fluoropropyl 4-(oxazol-2-yl)-phenyl 1133. 3-fluoropropyl 4-(oxazol-4-yl)-phenyl 1134. 3-fluoropropyl 4-(oxazol-5-yl)-phenyl 1135. 3-fluoropropyl 4-(isoxazol-3-yl)-phenyl 1136. 3-fluoropropyl 4-(isoxazol-4-yl)-phenyl 1137. 3-fluoropropyl 4-(isoxazol-5-yl)-phenyl 1138. 3-fluoropropyl 4-([1,2,3]-triazol-1-yl)-phenyl 1139. 3-fluoropropyl 4-([1,2,4]-triazol-1-yl)-phenyl 1140. 3-fluoropropyl 4-([1,2,3]-triazol-2-yl)-phenyl 1141. 3-fluoropropyl 4-(4H-[1,2,4]-triazol-3-yl)-phenyl 1142. 3-fluoropropyl 4-([1,2,4]-triazol-4-yl)-phenyl 1143. 3-fluoropropyl 4-(2H-[1,2,3]-triazol-4-yl)-phenyl 1144. 3-fluoropropyl 4-(4-methyl-4H-[1,2,4]-triazol-3-yl)-phenyl 1145. 3-fluoropropyl 4-(2-methyl-2H-[1,2,3]-triazol-4-yl)-phenyl 1146. 3-fluoropropyl 4-([1,3,4]-oxadiazol-2-yl)-phenyl 1147. 3-fluoropropyl 4-([1,2,4]-oxadiazol-3-yl)-phenyl 1148. 3-fluoropropyl 4-([1,2,4]-oxadiazol-5-yl)-phenyl 1149. 3-fluoropropyl 4-([1,2,3]-oxadiazol-4-yl)-phenyl 1150. 3-fluoropropyl 4-([1,2,3]-oxadiazol-5-yl)-phenyl 1151. 3-fluoropropyl 4-([1,2,3]-thiadiazol-4-yl)-phenyl 1152. 3-fluoropropyl 4-(1H-tetrazol-5-yl)-phenyl 1153. 3-fluoropropyl 4-(tetrazol-1-yl)-phenyl 1154. 3-fluoropropyl 4-(2-methyl-2H-tetrazol-5-yl)-phenyl 1155. 3-fluoropropyl 4-(1-methyl-1H-tetrazol-5-yl)-phenyl 1156. 3-fluoropropyl 4-furazan-3-yl-phenyl 1157. 3-fluoropropyl 4-(pyrid-2-yl)-phenyl 1158. 3-fluoropropyl 4-(pyrid-3-yl)-phenyl 1159. 3-fluoropropyl 4-(pyrid-4-yl)-phenyl 1160. 3-fluoropropyl 4-(pyrimidin-2-yl)-phenyl 1161. 3-fluoropropyl 4-(pyrimidin-4-yl)-phenyl 1162. 3-fluoropropyl 4-(pyrimidin-5-yl)-phenyl 1163. 3-fluoropropyl 5-isopropylthiophen-2-yl 1164. 3-fluoropropyl 2-chlorothiophen-5-yl 1165. 3-fluoropropyl 2,5-dichlorothiophen-4-yl 1166. 3-fluoropropyl 2,3-dichlorothiophen-5-yl 1167. 3-fluoropropyl 2-chloro-3-nitrothiophen-5-yl 1168. 3-fluoropropyl 2-(phenylsulfonyl)-thiophen-5-yl 1169. 3-fluoropropyl 2-(pyridin-2-yl)thiophen-5-yl 1170. 3-fluoropropyl 2-(5-(trifluoromethyl)isoxazol-3-yl)- thiophen-5-yl 1171. 3-fluoropropyl 2-(2-methylthiazol-4-yl)-thiophen-5-yl 1172. 3-fluoropropyl 1-methyl-1H-imidazol-4-yl 1173. 3-fluoropropyl 1,2-dimethyl-1H-imidazol-4-yl 1174. 3-fluoropropyl 3,5-dimethylisoxazol-4-yl 1175. 3-fluoropropyl thiazol-2-yl 1176. 3-fluoropropyl 4-methylthiazol-2-yl 1177. 3-fluoropropyl 4-isopropylthiazol-2-yl 1178. 3-fluoropropyl 4-trifluoromethylthiazol-2-yl 1179. 3-fluoropropyl 5-methylthiazol-2-yl 1180. 3-fluoropropyl 5-isopropylthiazol-2-yl 1181. 3-fluoropropyl 5-trifluoromethylthiazol-2-yl 1182. 3-fluoropropyl 2,4-dimethylthiazol-5-yl 1183. 3-fluoropropyl 2-acetamido-4-methylthiazol-5-yl 1184. 3-fluoropropyl 4H-[1,2,4]triazol-3-yl 1185. 3-fluoropropyl 5-methyl-4H-[1,2,4]triazol-3-yl 1186. 3-fluoropropyl 4-methyl-4H-[1,2,4]triazol-3-yl 1187. 3-fluoropropyl 5-isopropyl-4H-[1,2,4]triazol-3-yl 1188. 3-fluoropropyl 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl 1189. 3-fluoropropyl 4,5-dimethyl-4H-[1,2,4]triazol-3-yl 1190. 3-fluoropropyl 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl 1191. 3-fluoropropyl 5-trifluoromethyl-4-methyl-4H- [1,2,4]triazol-3-yl 1192. 3-fluoropropyl [1,3,4]thiadiazol-2-yl 1193. 3-fluoropropyl 5-methyl-[1,3,4]thiadiazol-2-yl 1194. 3-fluoropropyl 5-isopropyl-[1,3,4]thiadiazol-2-yl 1195. 3-fluoropropyl 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl 1196. 3-fluoropropyl 3-bromo-2-chloropyrid-5-yl 1197. 3-fluoropropyl 2-(4-morpholino)-pyrid-5-yl 1198. 3-fluoropropyl 2-phenoxypyrid-5-yl 1199. 3-fluoropropyl (2-isopropyl)-pyrimidin-5-yl 1200. 3-fluoropropyl (5-isopropyl)-pyrimidin-2-yl 1201. 3-fluoropropyl 8-quinolyl 1202. 3-fluoropropyl 5-isoquinolyl 1203. 3-fluoropropyl 2-(trifluoroacetyl)-1,2,3,4- tetrahydroisoquinolin-7-yl 1204. 3-fluoropropyl 5-chloro-3-methylbenzothiophen-2-yl 1205. 3-fluoropropyl 3,4-dihydro-4-methyl-2H- benzo[b][1,4]oxazinyl 1206. 3-fluoropropyl benzothiazol-6-yl 1207. 3-fluoropropyl benzo[2,1,3]oxadiazol-4-yl 1208. 3-fluoropropyl 5-chlorobenzo[2,1,3]oxadiazol-4-yl 1209. 3-fluoropropyl 7-chlorobenzo[2,1,3]oxadiazol-4-yl 1210. 3-fluoropropyl benzo[2,1,3]thiadiazol-4-yl 1211. 2-fluoroethyl 4-methylphenyl 1212. 2-fluoroethyl 4-ethylphenyl 1213. 2-fluoroethyl 4-propylphenyl 1214. 2-fluoroethyl 4-isopropylphenyl 1215. 2-fluoroethyl 4-sec-butylphenyl 1216. 2-fluoroethyl 4-isobutylphenyl 1217. 2-fluoroethyl 4-(1,1-dimethylpropyl)-phenyl 1218. 2-fluoroethyl 4-vinylphenyl 1219. 2-fluoroethyl 4-isopropenylphenyl 1220. 2-fluoroethyl 4-fluorophenyl 1221. 2-fluoroethyl 4-chlorophenyl 1222. 2-fluoroethyl 4-bromophenyl 1223. 2-fluoroethyl 4-(fluoromethyl)phenyl 1224. 2-fluoroethyl 3-(fluoromethyl)phenyl 1225. 2-fluoroethyl 2-(fluoromethyl)phenyl 1226. 2-fluoroethyl 4-(difluoromethyl)phenyl 1227. 2-fluoroethyl 3-(difluoromethyl)phenyl 1228. 2-fluoroethyl 2-(difluoromethyl)phenyl 1229. 2-fluoroethyl 4-(trifluoromethyl)phenyl 1230. 2-fluoroethyl 3-(trifluoromethyl)phenyl 1231. 2-fluoroethyl 2-(trifluoromethyl)phenyl 1232. 2-fluoroethyl 4-(1-fluoroethyl)-phenyl 1233. 2-fluoroethyl 4-((S)-1-fluoroethyl)-phenyl 1234. 2-fluoroethyl 4-((R)-1-fluoroethyl)-phenyl 1235. 2-fluoroethyl 4-(2-fluoroethyl)-phenyl 1236. 2-fluoroethyl 4-(1,1-difluoroethyl)-phenyl 1237. 2-fluoroethyl 4-(2,2-difluoroethyl)-phenyl 1238. 2-fluoroethyl 4-(2,2,2-trifluoroethyl)-phenyl 1239. 2-fluoroethyl 4-(3-fluoropropyl)-phenyl 1240. 2-fluoroethyl 4-(2-fluoropropyl)-phenyl 1241. 2-fluoroethyl 4-((S)-2-fluoropropyl)-phenyl 1242. 2-fluoroethyl 4-((R)-2-fluoropropyl)-phenyl 1243. 2-fluoroethyl 4-(3,3-difluoropropyl)-phenyl 1244. 2-fluoroethyl 4-(3,3,3-trifluoropropyl)-phenyl 1245. 2-fluoroethyl 4-(1-fluoro-1-methylethyl)-phenyl 1246. 2-fluoroethyl 4-(2-fluoro-1-methylethyl)-phenyl 1247. 2-fluoroethyl 4-((S)-2-fluoro-1-methylethyl)-phenyl 1248. 2-fluoroethyl 4-((R)-2-fluoro-1-methylethyl)-phenyl 1249. 2-fluoroethyl 4-(2,2-difluoro-1-methylethyl)-phenyl 1250. 2-fluoroethyl 4-((S)-2,2-difluoro-1-methylethyl)-phenyl 1251. 2-fluoroethyl 4-((R)-2,2-difluoro-1-methylethyl)-phenyl 1252. 2-fluoroethyl 4-(2,2,2-trifluoro-1-methylethyl)-phenyl 1253. 2-fluoroethyl 4-((S)-2,2,2-trifluoro-1-methylethyl)-phenyl 1254. 2-fluoroethyl 4-((R)-2,2,2-trifluoro-1-methylethyl)-phenyl 1255. 2-fluoroethyl 4-(2-fluoro-1-fluoromethylethyl)-phenyl 1256. 2-fluoroethyl 4-(1-difluoromethyl-2,2-difluoroethyl)- phenyl 1257. 2-fluoroethyl 4-(1,1-dimethyl-2-fluoroethyl)-phenyl 1258. 2-fluoroethyl 4-methoxyphenyl 1259. 2-fluoroethyl 4-ethoxyphenyl 1260. 2-fluoroethyl 4-propoxyphenyl 1261. 2-fluoroethyl 4-isopropoxyphenyl 1262. 2-fluoroethyl 4-butoxyphenyl 1263. 2-fluoroethyl 4-(fluoromethoxy)-phenyl 1264. 2-fluoroethyl 4-(difluoromethoxy)-phenyl 1265. 2-fluoroethyl 4-(trifluoromethoxy)-phenyl 1266. 2-fluoroethyl 3-(trifluoromethoxy)-phenyl 1267. 2-fluoroethyl 4-(2-fluoroethoxy)-phenyl 1268. 2-fluoroethyl 4-(2,2-difluoroethoxy)-phenyl 1269. 2-fluoroethyl 4-(2,2,2-trifluoroethoxy)-phenyl 1270. 2-fluoroethyl 4-(1,1,2,2-tetrafluoroethoxy)-phenyl 1271. 2-fluoroethyl 4-cyclopropylphenyl 1272. 2-fluoroethyl 4-cyclobutylphenyl 1273. 2-fluoroethyl 4-cyclopentylphenyl 1274. 2-fluoroethyl 4-(2,2-difluorocyclopropyl)-phenyl 1275. 2-fluoroethyl 3,4-difluorophenyl 1276. 2-fluoroethyl 4-bromo-3-fluorophenyl 1277. 2-fluoroethyl 4-bromo-2-fluorophenyl 1278. 2-fluoroethyl 4-bromo-2,5-difluorophenyl 1279. 2-fluoroethyl 2-fluoro-4-isopropylphenyl 1280. 2-fluoroethyl 3-fluoro-4-isopropylphenyl 1281. 2-fluoroethyl 4-(1-hydroxy-1-methylethyl)-phenyl 1282. 2-fluoroethyl 4-(2-hydroxy-2-methylpropyl)-phenyl 1283. 2-fluoroethyl 4-acetylphenyl 1284. 2-fluoroethyl 4-carboxyphenyl 1285. 2-fluoroethyl 4-cyanophenyl 1286. 2-fluoroethyl 4-hydroxyphenyl 1287. 2-fluoroethyl 4-(O-benzyl)-phenyl 1288. 2-fluoroethyl 4-(2-methoxyethoxy)-phenyl 1289. 2-fluoroethyl 4-(CH₂—N(CH₃)₂)-phenyl 1290. 2-fluoroethyl 4-(NH—CO—NH₂)-phenyl 1291. 2-fluoroethyl 4-(methylsulfanyl)-phenyl 1292. 2-fluoroethyl 4-(fluoromethylsulfanyl)-phenyl 1293. 2-fluoroethyl 4-(difluoromethylsulfanyl)-phenyl 1294. 2-fluoroethyl 4-(trifluoromethylsulfanyl)-phenyl 1295. 2-fluoroethyl 4-(methylsulfonyl)-phenyl 1296. 2-fluoroethyl 4-(N-methoxy-N-methyl-amino)-phenyl 1297. 2-fluoroethyl 4-(methoxyamino)-phenyl 1298. 2-fluoroethyl 4-(ethoxyamino)-phenyl 1299. 2-fluoroethyl 4-(N-methylaminooxy)-phenyl 1300. 2-fluoroethyl 4-(N,N-dimethylaminooxy)-phenyl 1301. 2-fluoroethyl 4-(azetidin-1-yl)-phenyl 1302. 2-fluoroethyl 4-(2-methylazetidin-1-yl)-phenyl 1303. 2-fluoroethyl 4-((S)-2-methylazetidin-1-yl)-phenyl 1304. 2-fluoroethyl 4-((R)-2-methylazetidin-1-yl)-phenyl 1305. 2-fluoroethyl 4-(3-fluoroazetidin-1-yl)-phenyl 1306. 2-fluoroethyl 4-(3-methoxyazetidin-1-yl)-phenyl 1307. 2-fluoroethyl 4-(3-hydroxyazetidin-1-yl)-phenyl 1308. 2-fluoroethyl 4-(pyrrolidin-1-yl)-phenyl 1309. 2-fluoroethyl 4-(pyrrolidin-2-yl)-phenyl 1310. 2-fluoroethyl 4-((S)-pyrrolidin-2-yl)-phenyl 1311. 2-fluoroethyl 4-((R)-pyrrolidin-2-yl)-phenyl 1312. 2-fluoroethyl 4-(pyrrolidin-3-yl)-phenyl 1313. 2-fluoroethyl 4-((S)-pyrrolidin-3-yl)-phenyl 1314. 2-fluoroethyl 4-((R)-pyrrolidin-3-yl)-phenyl 1315. 2-fluoroethyl 4-(2-fluoropyrrolidin-1-yl)-phenyl 1316. 2-fluoroethyl 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl 1317. 2-fluoroethyl 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl 1318. 2-fluoroethyl 4-(3-fluoropyrrolidin-1-yl)-phenyl 1319. 2-fluoroethyl 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl 1320. 2-fluoroethyl 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl 1321. 2-fluoroethyl 4-(2,2-difluoropyrrolidin-1-yl)-phenyl 1322. 2-fluoroethyl 4-(3,3-difluoropyrrolidin-1-yl)-phenyl 1323. 2-fluoroethyl 4-(2-methylpyrrolidin-1-yl)-phenyl 1324. 2-fluoroethyl 4-((S)-2-methylpyrrolidin-1-yl)-phenyl 1325. 2-fluoroethyl 4-((R)-2-methylpyrrolidin-1-yl)-phenyl 1326. 2-fluoroethyl 4-(3-methylpyrrolidin-1-yl)-phenyl 1327. 2-fluoroethyl 4-((S)-3-methylpyrrolidin-1-yl)-phenyl 1328. 2-fluoroethyl 4-((R)-3-methylpyrrolidin-1-yl)-phenyl 1329. 2-fluoroethyl 4-(1-methylpyrrolidin-2-yl)-phenyl 1330. 2-fluoroethyl 4-((S)-1-methylpyrrolidin-2-yl)-phenyl 1331. 2-fluoroethyl 4-((R)-1-methylpyrrolidin-2-yl)-phenyl 1332. 2-fluoroethyl 4-(1-methylpyrrolidin-3-yl)-phenyl 1333. 2-fluoroethyl 4-((S)-1-methylpyrrolidin-3-yl)-phenyl 1334. 2-fluoroethyl 4-((R)-1-methylpyrrolidin-3-yl)-phenyl 1335. 2-fluoroethyl 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl 1336. 2-fluoroethyl 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl 1337. 2-fluoroethyl 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl 1338. 2-fluoroethyl 4-((S)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 1339. 2-fluoroethyl 4-((R)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 1340. 2-fluoroethyl 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl 1341. 2-fluoroethyl 4-((S)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 1342. 2-fluoroethyl 4-((R)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 1343. 2-fluoroethyl 4-(2-oxopyrrolidin-1-yl)-phenyl 1344. 2-fluoroethyl 4-(2-oxo-oxazolidin-3-yl)-phenyl 1345. 2-fluoroethyl 4-(piperidin-1-yl)-phenyl 1346. 2-fluoroethyl 4-(2-methylpiperidin-1-yl)-phenyl 1347. 2-fluoroethyl 4-((S)-2-methylpiperidin-1-yl)-phenyl 1348. 2-fluoroethyl 4-((R)-2-methylpiperidin-1-yl)-phenyl 1349. 2-fluoroethyl 4-(piperazin-1-yl)-phenyl 1350. 2-fluoroethyl 4-(4-methylpiperazin-1-yl)-phenyl 1351. 2-fluoroethyl 4-(4-morpholin-4-yl)-phenyl 1352. 2-fluoroethyl 4-(thiomorpholin-4-yl)-phenyl 1353. 2-fluoroethyl 4-(1-oxo-thiomorpholin-4-yl)-phenyl 1354. 2-fluoroethyl 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl 1355. 2-fluoroethyl 4-(pyrrol-1-yl)-phenyl 1356. 2-fluoroethyl 4-(pyrrol-2-yl)-phenyl 1357. 2-fluoroethyl 4-(pyrrol-3-yl)-phenyl 1358. 2-fluoroethyl 4-(1-methylpyrrol-2-yl)-phenyl 1359. 2-fluoroethyl 4-(1-methylpyrrol-3-yl)-phenyl 1360. 2-fluoroethyl 4-(furan-2-yl)-phenyl 1361. 2-fluoroethyl 4-(furan-3-yl)-phenyl 1362. 2-fluoroethyl 4-(thiophen-2-yl)-phenyl 1363. 2-fluoroethyl 4-(thiophen-3-yl)-phenyl 1364. 2-fluoroethyl 4-(5-propylthien-2-yl)-phenyl 1365. 2-fluoroethyl 4-(pyrazol-1-yl)-phenyl 1366. 2-fluoroethyl 4-(pyrazol-3-yl)-phenyl 1367. 2-fluoroethyl 4-(pyrazol-4-yl)-phenyl 1368. 2-fluoroethyl 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 1369. 2-fluoroethyl 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl 1370. 2-fluoroethyl 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 1371. 2-fluoroethyl 4-(1H-imidazol-2-yl)-phenyl 1372. 2-fluoroethyl 4-(imidazol-1-yl)-phenyl 1373. 2-fluoroethyl 4-(1-methylimidazol-2-yl)-phenyl 1374. 2-fluoroethyl 4-(oxazol-2-yl)-phenyl 1375. 2-fluoroethyl 4-(oxazol-4-yl)-phenyl 1376. 2-fluoroethyl 4-(oxazol-5-yl)-phenyl 1377. 2-fluoroethyl 4-(isoxazol-3-yl)-phenyl 1378. 2-fluoroethyl 4-(isoxazol-4-yl)-phenyl 1379. 2-fluoroethyl 4-(isoxazol-5-yl)-phenyl 1380. 2-fluoroethyl 4-([1,2,3]-triazol-1-yl)-phenyl 1381. 2-fluoroethyl 4-([1,2,4]-triazol-1-yl)-phenyl 1382. 2-fluoroethyl 4-([1,2,3]-triazol-2-yl)-phenyl 1383. 2-fluoroethyl 4-(4H-[1,2,4]-triazol-3-yl)-phenyl 1384. 2-fluoroethyl 4-([1,2,4]-triazol-4-yl)-phenyl 1385. 2-fluoroethyl 4-(2H-[1,2,3]-triazol-4-yl)-phenyl 1386. 2-fluoroethyl 4-(4-methyl-4H-[1,2,4]-triazol-3-yl)-phenyl 1387. 2-fluoroethyl 4-(2-methyl-2H-[1,2,3]-triazol-4-yl)-phenyl 1388. 2-fluoroethyl 4-([1,3,4]-oxadiazol-2-yl)-phenyl 1389. 2-fluoroethyl 4-([1,2,4]-oxadiazol-3-yl)-phenyl 1390. 2-fluoroethyl 4-([1,2,4]-oxadiazol-5-yl)-phenyl 1391. 2-fluoroethyl 4-([1,2,3]-oxadiazol-4-yl)-phenyl 1392. 2-fluoroethyl 4-([1,2,3]-oxadiazol-5-yl)-phenyl 1393. 2-fluoroethyl 4-([1,2,3]-thiadiazol-4-yl)-phenyl 1394. 2-fluoroethyl 4-(1H-tetrazol-5-yl)-phenyl 1395. 2-fluoroethyl 4-(tetrazol-1-yl)-phenyl 1396. 2-fluoroethyl 4-(2-methyl-2H-tetrazol-5-yl)-phenyl 1397. 2-fluoroethyl 4-(1-methyl-1H-tetrazol-5-yl)-phenyl 1398. 2-fluoroethyl 4-furazan-3-yl-phenyl 1399. 2-fluoroethyl 4-(pyrid-2-yl)-phenyl 1400. 2-fluoroethyl 4-(pyrid-3-yl)-phenyl 1401. 2-fluoroethyl 4-(pyrid-4-yl)-phenyl 1402. 2-fluoroethyl 4-(pyrimidin-2-yl)-phenyl 1403. 2-fluoroethyl 4-(pyrimidin-4-yl)-phenyl 1404. 2-fluoroethyl 4-(pyrimidin-5-yl)-phenyl 1405. 2-fluoroethyl 5-isopropylthiophen-2-yl 1406. 2-fluoroethyl 2-chlorothiophen-5-yl 1407. 2-fluoroethyl 2,5-dichlorothiophen-4-yl 1408. 2-fluoroethyl 2,3-dichlorothiophen-5-yl 1409. 2-fluoroethyl 2-chloro-3-nitrothiophen-5-yl 1410. 2-fluoroethyl 2-(phenylsulfonyl)-thiophen-5-yl 1411. 2-fluoroethyl 2-(pyridin-2-yl)thiophen-5-yl 1412. 2-fluoroethyl 2-(5-(trifluoromethyl)isoxazol-3-yl)- thiophen-5-yl 1413. 2-fluoroethyl 2-(2-methylthiazol-4-yl)-thiophen-5-yl 1414. 2-fluoroethyl 1-methyl-1H-imidazol-4-yl 1415. 2-fluoroethyl 1,2-dimethyl-1H-imidazol-4-yl 1416. 2-fluoroethyl 3,5-dimethylisoxazol-4-yl 1417. 2-fluoroethyl thiazol-2-yl 1418. 2-fluoroethyl 4-methylthiazol-2-yl 1419. 2-fluoroethyl 4-isopropylthiazol-2-yl 1420. 2-fluoroethyl 4-trifluoromethylthiazol-2-yl 1421. 2-fluoroethyl 5-methylthiazol-2-yl 1422. 2-fluoroethyl 5-isopropylthiazol-2-yl 1423. 2-fluoroethyl 5-trifluoromethylthiazol-2-yl 1424. 2-fluoroethyl 2,4-dimethylthiazol-5-yl 1425. 2-fluoroethyl 2-acetamido-4-methylthiazol-5-yl 1426. 2-fluoroethyl 4H-[1,2,4]triazol-3-yl 1427. 2-fluoroethyl 5-methyl-4H-[1,2,4]triazol-3-yl 1428. 2-fluoroethyl 4-methyl-4H-[1,2,4]triazol-3-yl 1429. 2-fluoroethyl 5-isopropyl-4H-[1,2,4]triazol-3-yl 1430. 2-fluoroethyl 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl 1431. 2-fluoroethyl 4,5-dimethyl-4H-[1,2,4]triazol-3-yl 1432. 2-fluoroethyl 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl 1433. 2-fluoroethyl 5-trifluoromethyl-4-methyl-4H- [1,2,4]triazol-3-yl 1434. 2-fluoroethyl [1,3,4]thiadiazol-2-yl 1435. 2-fluoroethyl 5-methyl-[1,3,4]thiadiazol-2-yl 1436. 2-fluoroethyl 5-isopropyl-[1,3,4]thiadiazol-2-yl 1437. 2-fluoroethyl 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl 1438. 2-fluoroethyl 3-bromo-2-chloropyrid-5-yl 1439. 2-fluoroethyl 2-(4-morpholino)-pyrid-5-yl 1440. 2-fluoroethyl 2-phenoxypyrid-5-yl 1441. 2-fluoroethyl (2-isopropyl)-pyrimidin-5-yl 1442. 2-fluoroethyl (5-isopropyl)-pyrimidin-2-yl 1443. 2-fluoroethyl 8-quinolyl 1444. 2-fluoroethyl 5-isoquinolyl 1445. 2-fluoroethyl 2-(trifluoroacetyl)-1,2,3,4- tetrahydroisoquinolin-7-yl 1446. 2-fluoroethyl 5-chloro-3-methylbenzothiophen-2-yl 1447. 2-fluoroethyl 3,4-dihydro-4-methyl-2H- benzo[b][1,4]oxazinyl 1448. 2-fluoroethyl benzothiazol-6-yl 1449. 2-fluoroethyl benzo[2,1,3]oxadiazol-4-yl 1450. 2-fluoroethyl 5-chlorobenzo[2,1,3]oxadiazol-4-yl 1451. 2-fluoroethyl 7-chlorobenzo[2,1,3]oxadiazol-4-yl 1452. 2-fluoroethyl benzo[2,1,3]thiadiazol-4-yl 1453. cyclopropylmethyl 4-methylphenyl 1454. cyclopropylmethyl 4-ethylphenyl 1455. cyclopropylmethyl 4-propylphenyl 1456. cyclopropylmethyl 4-isopropylphenyl 1457. cyclopropylmethyl 4-sec-butylphenyl 1458. cyclopropylmethyl 4-isobutylphenyl 1459. cyclopropylmethyl 4-(1,1-dimethylpropyl)-phenyl 1460. cyclopropylmethyl 4-vinylphenyl 1461. cyclopropylmethyl 4-isopropenylphenyl 1462. cyclopropylmethyl 4-fluorophenyl 1463. cyclopropylmethyl 4-chlorophenyl 1464. cyclopropylmethyl 4-bromophenyl 1465. cyclopropylmethyl 4-(fluoromethyl)phenyl 1466. cyclopropylmethyl 3-(fluoromethyl)phenyl 1467. cyclopropylmethyl 2-(fluoromethyl)phenyl 1468. cyclopropylmethyl 4-(difluoromethyl)phenyl 1469. cyclopropylmethyl 3-(difluoromethyl)phenyl 1470. cyclopropylmethyl 2-(difluoromethyl)phenyl 1471. cyclopropylmethyl 4-(trifluoromethyl)phenyl 1472. cyclopropylmethyl 3-(trifluoromethyl)phenyl 1473. cyclopropylmethyl 2-(trifluoromethyl)phenyl 1474. cyclopropylmethyl 4-(1-fluoroethyl)-phenyl 1475. cyclopropylmethyl 4-((S)-1-fluoroethyl)-phenyl 1476. cyclopropylmethyl 4-((R)-1-fluoroethyl)-phenyl 1477. cyclopropylmethyl 4-(2-fluoroethyl)-phenyl 1478. cyclopropylmethyl 4-(1,1-difluoroethyl)-phenyl 1479. cyclopropylmethyl 4-(2,2-difluoroethyl)-phenyl 1480. cyclopropylmethyl 4-(2,2,2-trifluoroethyl)-phenyl 1481. cyclopropylmethyl 4-(3-fluoropropyl)-phenyl 1482. cyclopropylmethyl 4-(2-fluoropropyl)-phenyl 1483. cyclopropylmethyl 4-((S)-2-fluoropropyl)-phenyl 1484. cyclopropylmethyl 4-((R)-2-fluoropropyl)-phenyl 1485. cyclopropylmethyl 4-(3,3-difluoropropyl)-phenyl 1486. cyclopropylmethyl 4-(3,3,3-trifluoropropyl)-phenyl 1487. cyclopropylmethyl 4-(1-fluoro-1-methylethyl)-phenyl 1488. cyclopropylmethyl 4-(2-fluoro-1-methylethyl)-phenyl 1489. cyclopropylmethyl 4-((S)-2-fluoro-1-methylethyl)-phenyl 1490. cyclopropylmethyl 4-((R)-2-fluoro-1-methylethyl)-phenyl 1491. cyclopropylmethyl 4-(2,2-difluoro-1-methylethyl)-phenyl 1492. cyclopropylmethyl 4-((S)-2,2-difluoro-1-methylethyl)-phenyl 1493. cyclopropylmethyl 4-((R)-2,2-difluoro-1-methylethyl)-phenyl 1494. cyclopropylmethyl 4-(2,2,2-trifluoro-1-methylethyl)-phenyl 1495. cyclopropylmethyl 4-((S)-2,2,2-trifluoro-1-methylethyl)-phenyl 1496. cyclopropylmethyl 4-((R)-2,2,2-trifluoro-1-methylethyl)-phenyl 1497. cyclopropylmethyl 4-(2-fluoro-1-fluoromethylethyl)-phenyl 1498. cyclopropylmethyl 4-(1-difluoromethyl-2,2-difluoroethyl)- phenyl 1499. cyclopropylmethyl 4-(1,1-dimethyl-2-fluoroethyl)-phenyl 1500. cyclopropylmethyl 4-methoxyphenyl 1501. cyclopropylmethyl 4-ethoxyphenyl 1502. cyclopropylmethyl 4-propoxyphenyl 1503. cyclopropylmethyl 4-isopropoxyphenyl 1504. cyclopropylmethyl 4-butoxyphenyl 1505. cyclopropylmethyl 4-(fluoromethoxy)-phenyl 1506. cyclopropylmethyl 4-(difluoromethoxy)-phenyl 1507. cyclopropylmethyl 4-(trifluoromethoxy)-phenyl 1508. cyclopropylmethyl 3-(trifluoromethoxy)-phenyl 1509. cyclopropylmethyl 4-(2-fluoroethoxy)-phenyl 1510. cyclopropylmethyl 4-(2,2-difluoroethoxy)-phenyl 1511. cyclopropylmethyl 4-(2,2,2-trifluoroethoxy)-phenyl 1512. cyclopropylmethyl 4-(1,1,2,2-tetrafluoroethoxy)-phenyl 1513. cyclopropylmethyl 4-cyclopropylphenyl 1514. cyclopropylmethyl 4-cyolobutylphenyl 1515. cyclopropylmethyl 4-cyclopentylphenyl 1516. cyclopropylmethyl 4-(2,2-difluorocyclopropyl)-phenyl 1517. cyclopropylmethyl 3,4-difluorophenyl 1518. cyclopropylmethyl 4-bromo-3-fluorophenyl 1519. cyclopropylmethyl 4-bromo-2-fluorophenyl 1520. cyclopropylmethyl 4-bromo-2,5-difluorophenyl 1521. cyclopropylmethyl 2-fluoro-4-isopropylphenyl 1522. cyclopropylmethyl 3-fluoro-4-isopropylphenyl 1523. cyclopropylmethyl 4-(1-hydroxy-1-methylethyl)-phenyl 1524. cyclopropylmethyl 4-(2-hydroxy-2-methylpropyl)-phenyl 1525. cyclopropylmethyl 4-acetylphenyl 1526. cyclopropylmethyl 4-carboxyphenyl 1527. cyclopropylmethyl 4-cyanophenyl 1528. cyclopropylmethyl 4-hydroxyphenyl 1529. cyclopropylmethyl 4-(O-benzyl)-phenyl 1530. cyclopropylmethyl 4-(2-methoxyethoxy)-phenyl 1531. cyclopropylmethyl 4-(CH₂—N(CH₃)₂)-phenyl 1532. cyclopropylmethyl 4-(NH—CO—NH₂)-phenyl 1533. cyclopropylmethyl 4-(methylsulfanyl)-phenyl 1534. cyclopropylmethyl 4-(fluoromethylsulfanyl)-phenyl 1535. cyclopropylmethyl 4-(difluoromethylsulfanyl)-phenyl 1536. cyclopropylmethyl 4-(trifluoromethylsulfanyl)-phenyl 1537. cyclopropylmethyl 4-(methylsulfonyl)-phenyl 1538. cyclopropylmethyl 4-(N-methoxy-N-methyl-amino)-phenyl 1539. cyclopropylmethyl 4-(methoxyamino)-phenyl 1540. cyclopropylmethyl 4-(ethoxyamino)-phenyl 1541. cyclopropylmethyl 4-(N-methylaminooxy)-phenyl 1542. cyclopropylmethyl 4-(N,N-dimethylaminooxy)-phenyl 1543. cyclopropylmethyl 4-(azetidin-1-yl)-phenyl 1544. cyclopropylmethyl 4-(2-methylazetidin-1-yl)-phenyl 1545. cyclopropylmethyl 4-((S)-2-methylazetidin-1-yl)-phenyl 1546. cyclopropylmethyl 4-((R)-2-methylazetidin-1-yl)-phenyl 1547. cyclopropylmethyl 4-(3-fluoroazetidin-1-yl)-phenyl 1548. cyclopropylmethyl 4-(3-methoxyazetidin-1-yl)-phenyl 1549. cyclopropylmethyl 4-(3-hydroxyazetidin-1-yl)-phenyl 1550. cyclopropylmethyl 4-(pyrrolidin-1-yl)-phenyl 1551. cyclopropylmethyl 4-(pyrrolidin-2-yl)-phenyl 1552. cyclopropylmethyl 4-((S)-pyrrolidin-2-yl)-phenyl 1553. cyclopropylmethyl 4-((R)-pyrrolidin-2-yl)-phenyl 1554. cyclopropylmethyl 4-(pyrrolidin-3-yl)-phenyl 1555. cyclopropylmethyl 4-((S)-pyrrolidin-3-yl)-phenyl 1556. cyclopropylmethyl 4-((R)-pyrrolidin-3-yl)-phenyl 1557. cyclopropylmethyl 4-(2-fluoropyrrolidin-1-yl)-phenyl 1558. cyclopropylmethyl 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl 1559. cyclopropylmethyl 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl 1560. cyclopropylmethyl 4-(3-fluoropyrrolidin-1-yl)-phenyl 1561. cyclopropylmethyl 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl 1562. cyclopropylmethyl 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl 1563. cyclopropylmethyl 4-(2,2-difluoropyrrolidin-1-yl)-phenyl 1564. cyclopropylmethyl 4-(3,3-difluorophrrolidin-1-yl)-phenyl 1565. cyclopropylmethyl 4-(2-methylpyrrolidin-1-yl)-phenyl 1566. cyclopropylmethyl 4-((S)-2-methylpyrrolidin-1-yl)-phenyl 1567. cyclopropylmethyl 4-((R)-2-methylpyrrolidin-1-yl)-phenyl 1568. cyclopropylmethyl 4-(3-methylpyrrolidin-1-yl)-phenyl 1569. cyclopropylmethyl 4-((S)-3-methylpyrrolidin-1-yl)-phenyl 1570. cyclopropylmethyl 4-((R)-3-methylpyrrolidin-1-yl)-phenyl 1571. cyclopropylmethyl 4-(1-methylpyrrolidin-2-yl)-phenyl 1572. cyclopropylmethyl 4-((S)-1-methylpyrrolidin-2-yl)-phenyl 1573. cyclopropylmethyl 4-((R)-1-methylpyrrolidin-2-yl)-phenyl 1574. cyclopropylmethyl 4-(1-methylpyrrolidin-3-yl)-phenyl 1575. cyclopropylmethyl 4-((S)-1-methylpyrrolidin-3-yl)-phenyl 1576. cyclopropylmethyl 4-((R)-1-methylpyrrolidin-3-yl)-phenyl 1577. cyclopropylmethyl 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl 1578. cyclopropylmethyl 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl 1579. cyclopropylmethyl 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl 1580. cyclopropylmethyl 4-((S)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 1581. cyclopropylmethyl 4-((R)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 1582. cyclopropylmethyl 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl 1583. cyclopropylmethyl 4-((S)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 1584. cyclopropylmethyl 4-((R)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 1585. cyclopropylmethyl 4-(2-oxopyrrolidin-1-yl)-phenyl 1586. cyclopropylmethyl 4-(2-oxo-oxazolidin-3-yl)-phenyl 1587. cyclopropylmethyl 4-(piperidin-1-yl)-phenyl 1588. cyclopropylmethyl 4-(2-methylpiperidin-1-yl)-phenyl 1589. cyclopropylmethyl 4-((S)-2-methylpiperidin-1-yl)-phenyl 1590. cyclopropylmethyl 4-((R)-2-methylpiperidin-1-yl)-phenyl 1591. cyclopropylmethyl 4-(piperidin-1-yl)-phenyl 1592. cyclopropylmethyl 4-(4-methylpiperazin-1-yl)-phenyl 1593. cyclopropylmethyl 4-(morpholin-4-yl)-phenyl 1594. cyclopropylmethyl 4-(thiomorpholin-4-yl)-phenyl 1595. cyclopropylmethyl 4-(1-oxo-thiomorpholin-4-yl)-phenyl 1596. cyclopropylmethyl 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl 1597. cyclopropylmethyl 4-(pyrrol-1-yl)-phenyl 1598. cyclopropylmethyl 4-(pyrrol-2-yl)-phenyl 1599. cyclopropylmethyl 4-(pyrrol-3-yl)-phenyl 1600. cyclopropylmethyl 4-(1-methylpyrrol-2-yl)-phenyl 1601. cyclopropylmethyl 4-(1-methylpyrrol-2-yl)-phenyl 1602. cyclopropylmethyl 4-(furan-2-yl)-phenyl 1603. cyclopropylmethyl 4-(furan-3-yl)-phenyl 1604. cyclopropylmethyl 4-(thiophen-2-yl)-phenyl 1605. cyclopropylmethyl 4-(thiophen-3-yl)-phenyl 1606. cyclopropylmethyl 4-(5-propylthien-2-yl)-phenyl 1607. cyclopropylmethyl 4-(pyrazol-1-yl)-phenyl 1608. cyclopropylmethyl 4-(pyrazol-3-yl)-phenyl 1609. cyclopropylmethyl 4-(pyrazol-4-yl)-phenyl 1610. cyclopropylmethyl 4-(1-methyl-1H-pyrazol-4-yl)-phenyl 1611. cyclopropylmethyl 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl 1612. cyclopropylmethyl 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 1613. cyclopropylmethyl 4-(1H-imidazol-2-yl)-phenyl 1614. cyclopropylmethyl 4-(imidazol-1-yl)-phenyl 1615. cyclopropylmethyl 4-(1-methylimidazol-2-yl)-phenyl 1616. cyclopropylmethyl 4-(oxazol-2-yl)-phenyl 1617. cyclopropylmethyl 4-(oxazol-4-yl)-phenyl 1618. cyclopropylmethyl 4-(oxazol-5-yl)-phenyl 1619. cyclopropylmethyl 4-(isoxazol-3-yl)-phenyl 1620. cyclopropylmethyl 4-(isoxazol-4-yl)-phenyl 1621. cyclopropylmethyl 4-(isoxazol-5-yl)-phenyl 1622. cyclopropylmethyl 4-([1,2,3]-triazol-1-yl)-phenyl 1623. cyclopropylmethyl 4-([1,2,4]-triazol-1-yl)-phenyl 1624. cyclopropylmethyl 4-([1,2,3]-triazol-2-yl)-phenyl 1625. cyclopropylmethyl 4-(4H-[1,2,4]-triazol-3-yl)-phenyl 1626. cyclopropylmethyl 4-([1,2,4]-triazol-4-yl)-phenyl 1627. cyclopropylmethyl 4-(2H-[1,2,3]-triazol-4-yl)-phenyl 1628. cyclopropylmethyl 4-(4-methyl-4H-[1,2,4]-triazol-3-yl)-phenyl 1629. cyclopropylmethyl 4-(2-methyl-2H-[1,2,3]-triazol-4-yl)-phenyl 1630. cyclopropylmethyl 4-([1,3,4]-oxadiazol-2-yl)-phenyl 1631. cyclopropylmethyl 4-([1,2,4]-oxadiazol-3-yl)-phenyl 1632. cyclopropylmethyl 4-([1,2,4]-oxadiazol-5-yl)-phenyl 1633. cyclopropylmethyl 4-([1,2,3]-oxadiazol-4-yl)-phenyl 1634. cyclopropylmethyl 4-([1,2,3]-oxadiazol-5-yl)-phenyl 1635. cyclopropylmethyl 4-([1,2,3]-thiadiazol-4-yl)-phenyl 1636. cyclopropylmethyl 4-(1H-tetrazol-5-yl)-phenyl 1637. cyclopropylmethyl 4-(tetrazol-1-yl)-phenyl 1638. cyclopropylmethyl 4-(2-methyl-2H-tetrazol-5-yl)-phenyl 1639. cyclopropylmethyl 4-(1-methyl-1H-tetrazol-5-yl)-phenyl 1640. cyclopropylmethyl 4-furazan-3-yl-phenyl 1641. cyclopropylmethyl 4-(pyrid-2-yl)-phenyl 1642. cyclopropylmethyl 4-(pyrid-3-yl)-phenyl 1643. cyclopropylmethyl 4-(pyrid-4-yl)-phenyl 1644. cyclopropylmethyl 4-(pyrimidin-2-yl)-phenyl 1645. cyclopropylmethyl 4-(pyrimidin-4-yl)-phenyl 1646. cyclopropylmethyl 4-(pyrimidin-5-yl)-phenyl 1647. cyclopropylmethyl 5-isopropylthiophen-2-yl 1648. cyclopropylmethyl 2-chlorothiophen-5-yl 1649. cyclopropylmethyl 2,5-dichlorothiophen-4-yl 1650. cyclopropylmethyl 2,3-dichlorothiophen-5-yl 1651. cyclopropylmethyl 2-chloro-3-nitrothiophen-5-yl 1652. cyclopropylmethyl 2-(phenylsulfonyl)-thiophen-5-yl 1653. cyclopropylmethyl 2-(pyridin-2-yl)thiophen-5-yl 1654. cyclopropylmethyl 2-(5-(trifluoromethyl)isoxazol-3-yl)- thiophen-5-yl 1655. cyclopropylmethyl 2-(2-methylthiazol-4-yl)-thiophen-5-yl 1656. cyclopropylmethyl 1-methyl-1H-imidazol-4-yl 1657. cyclopropylmethyl 1,2-dimethyl-1H-imidazol-4-yl 1658. cyclopropylmethyl 3,5-dimethylisoxazol-4-yl 1659. cyclopropylmethyl thiazol-2-yl 1660. cyclopropylmethyl 4-methylthiazol-2-yl 1661. cyclopropylmethyl 4-isopropylthiazol-2-yl 1662. cyclopropylmethyl 4-trifluromethylthiazol-2-yl 1663. cyclopropylmethyl 5-methylthiazol-2-yl 1664. cyclopropylmethyl 5-isopropylthiazol-2-yl 1665. cyclopropylmethyl 5-trifluromethylthiazol-2-yl 1666. cyclopropylmethyl 2,4-dimethylthiazol-5-yl 1667. cyclopropylmethyl 2-acetamido-4-methylthiazol-5-yl 1668. cyclopropylmethyl 4H-[1,2,4]triazol-3-yl 1669. cyclopropylmethyl 5-methyl-4H-[1,2,4]triazol-3-yl 1670. cyclopropylmethyl 4-methyl-4H-[1,2,4]triazol-3-yl 1671. cyclopropylmethyl 5-isopropyl-4H-[1,2,4]triazol-3-yl 1672. cyclopropylmethyl 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl 1673. cyclopropylmethyl 4,5-dimethyl-4H-[1,2,4]triazol-3-yl 1674. cyclopropylmethyl 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl 1675. cyclopropylmethyl 5-trifluoromethyl-4-methyl-4H- [1,2,4]triazol-3-yl 1676. cyclopropylmethyl [1,3,4]thiadiazol-2-yl 1677. cyclopropylmethyl 5-methyl-[1,3,4]thiadiazol-2-yl 1678. cyclopropylmethyl 5-isopropyl-[1,3,4]thiadiazol-2-yl 1679. cyclopropylmethyl 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl 1680. cyclopropylmethyl 3-bromo-2-chloropyrid-5-yl 1681. cyclopropylmethyl 2-(4-morpholino)-pyrid-5-yl 1682. cyclopropylmethyl 2-phenoxypyrid-5-yl 1683. cyclopropylmethyl (2-isopropyl)-pyrimidin-5-yl 1684. cyclopropylmethyl (5-isopropyl)-pyrimidin-2-yl 1685. cyclopropylmethyl 8-quinolyl 1686. cyclopropylmethyl 5-isoquinolyl 1687. cyclopropylmethyl 2-(trifluoroacetyl)-1,2,3,4- tetrahydroisoquinolin-7-yl 1688. cyclopropylmethyl 5-chloro-3-methylbezothiophen-2-yl 1689. cyclopropylmethyl 3,4-dihydro-4-methyl-2H- benzo[b][1,4]oxazinyl 1690. cyclopropylmethyl benzothiazol-6-yl 1691. cyclopropylmethyl benzo[2,1,3]oxadiazol-4-yl 1692. cyclopropylmethyl 5-chlorobenzo[2,1,3]oxadiazol-4-yl 1693. cyclopropylmethyl 7-chlorobenzo[2,1,3]oxadiazol-4-yl 1694. cyclopropylmethyl benzo[2,1,3]thiadazol-4-yl 1695. allyl 4-methylphenyl 1696. allyl 4-ethylphenyl 1697. allyl 4-propylphenyl 1698. allyl 4-isopropylphenyl 1699. allyl 4-sec-butylphenyl 1700. allyl 4-isobutylphenyl 1701. allyl 4-(1,1-dimethylpropyl)-phenyl 1702. allyl 4-vinylphenyl 1703. allyl 4-isopropenylphenyl 1704. allyl 4-fluorophenyl 1705. allyl 4-chlorophenyl 1706. allyl 4-bromophenyl 1707. allyl 4-(fluoromethyl)phenyl 1708. allyl 3-(fluoromethyl)phenyl 1709. allyl 2-(fluoromethyl)phenyl 1710. allyl 4-(difluoromethyl)phenyl 1711. allyl 3-(difluoromethyl)phenyl 1712. allyl 2-(difluoromethyl)phenyl 1713. allyl 4-(trifluoromethyl)phenyl 1714. allyl 3-(trifluoromethyl)phenyl 1715. allyl 2-(trifluoromethyl)phenyl 1716. allyl 4-(1-fluoroethyl)-phenyl 1717. allyl 4-((S)-1-fluoroethyl)-phenyl 1718. allyl 4-((R)-1-fluoroethyl)-phenyl 1719. allyl 4-(2-fluoroethyl)-phenyl 1720. allyl 4-(1,1-difluoroethyl)-phenyl 1721. allyl 4-(2,2-difluoroethyl)-phenyl 1722. allyl 4-(2,2,2-trifluoroethyl)-phenyl 1723. allyl 4-(3-fluoropropyl)-phenyl 1724. allyl 4-(2-fluoropropyl)-phenyl 1725. allyl 4-((S)-2-fluoropropyl)-phenyl 1726. allyl 4-((R)-2-fluoropropyl)-phenyl 1727. allyl 4-(3,3-difluoropropyl)-phenyl 1728. allyl 4-(3,3,3-trifluoropropyl)-phenyl 1729. allyl 4-(1-fluoro-1-methylethyl)-phenyl 1730. allyl 4-(2-fluoro-1-methylethyl)-phenyl 1731. allyl 4-((S)-2-fluoro-1-methylethyl)-phenyl 1732. allyl 4-((R)-2-fluoro-1-methylethyl)-phenyl 1733. allyl 4-(2,2-difluoro-1-methylethyl)-phenyl 1734. allyl 4-((S)-2,2-difluoro-1-methylethyl)-phenyl 1735. allyl 4-((R)-2,2-difluoro-1-methylethyl)-phenyl 1736. allyl 4-(2,2,2-trifluoro-1-methylethyl)-phenyl 1737. allyl 4-((S)-2,2,2-trifluoro-1-methylethyl)-phenyl 1738. allyl 4-((R)-2,2,2-trifluoro-1-methylethyl)-phenyl 1739. allyl 4-(2-fluoro-1-fluoromethylethyl)-phenyl 1740. allyl 4-(1-difluoromethyl-2,2-difluoroethyl)- phenyl 1741. allyl 4-(1,1-dimethyl-2-fluoroethyl)-phenyl 1742. allyl 4-methoxyphenyl 1743. allyl 4-ethoxyphenyl 1744. allyl 4-propoxyphenyl 1745. allyl 4-isopropoxyphenyl 1746. allyl 4-butoxyphenyl 1747. allyl 4-(fluoromethoxy)-phenyl 1748. allyl 4-(difluoromethoxy)-phenyl 1749. allyl 4-(trifluoromethoxy)-phenyl 1750. allyl 3-(trifluoromethoxy)-phenyl 1751. allyl 4-(2-fluoroethoxy)-phenyl 1752. allyl 4-(2,2-difluoroethoxy)-phenyl 1753. allyl 4-(2,2,2-trifluoroethoxy)-phenyl 1754. allyl 4-(1,1,2,2-tetrafluoroethoxy)-phenyl 1755. allyl 4-cyclopropylphenyl 1756. allyl 4-cyolobutylphenyl 1757. allyl 4-cyclopentylphenyl 1758. allyl 4-(2,2-difluorocyclopropyl)-phenyl 1759. allyl 3,4-difluorophenyl 1760. allyl 4-bromo-3-fluorophenyl 1761. allyl 4-bromo-2-fluorophenyl 1762. allyl 4-bromo-2,5-difluorophenyl 1763. allyl 2-fluoro-4-isopropylphenyl 1764. allyl 3-fluoro-4-isopropylphenyl 1765. allyl 4-(1-hydroxy-1-methylethyl)-phenyl 1766. allyl 4-(2-hydroxy-2-methylpropyl)-phenyl 1767. allyl 4-acetylphenyl 1768. allyl 4-carboxyphenyl 1769. allyl 4-cyanophenyl 1770. allyl 4-hydroxyphenyl 1771. allyl 4-(O-benzyl)-phenyl 1772. allyl 4-(2-methoxyethoxy)-phenyl 1773. allyl 4-(CH₂—N(CH₃)₂)-phenyl 1774. allyl 4-(NH—CO—NH₂)-phenyl 1775. allyl 4-(methylsulfanyl)-phenyl 1776. allyl 4-(fluoromethylsulfanyl)-phenyl 1777. allyl 4-(difluoromethylsulfanyl)-phenyl 1778. allyl 4-(trifluoromethylsulfanyl)-phenyl 1779. allyl 4-(methylsulfonyl)-phenyl 1780. allyl 4-(N-methoxy-N-methyl-amino)-phenyl 1781. allyl 4-(methoxyamino)-phenyl 1782. allyl 4-(ethoxyamino)-phenyl 1783. allyl 4-(N-methylaminooxy)-phenyl 1784. allyl 4-(N,N-dimethylaminooxy)-phenyl 1785. allyl 4-(azetidin-1-yl)-phenyl 1786. allyl 4-(2-methylazetidin-1-yl)-phenyl 1787. allyl 4-((S)-2-methylazetidin-1-yl)-phenyl 1788. allyl 4-((R)-2-methylazetidin-1-yl)-phenyl 1789. allyl 4-(3-fluoroazetidin-1-yl)-phenyl 1790. allyl 4-(3-methoxyazetidin-1-yl)-phenyl 1791. allyl 4-(3-hydroxyazetidin-1-yl)-phenyl 1792. allyl 4-(pyrrolidin-1-yl)-phenyl 1793. allyl 4-(pyrrolidin-2-yl)-phenyl 1794. allyl 4-((S)-pyrrolidin-2-yl)-phenyl 1795. allyl 4-((R)-pyrrolidin-2-yl)-phenyl 1796. allyl 4-(pyrrolidin-3-yl)-phenyl 1797. allyl 4-((S)-pyrrolidin-3-yl)-phenyl 1798. allyl 4-((R)-pyrrolidin-3-yl)-phenyl 1799. allyl 4-(2-fluoropyrrolidin-1-yl)-phenyl 1800. allyl 4-((S)-2-fluoropyrrolidin-1-yl)-phenyl 1801. allyl 4-((R)-2-fluoropyrrolidin-1-yl)-phenyl 1802. allyl 4-(3-fluoropyrrolidin-1-yl)-phenyl 1803. allyl 4-((S)-3-fluoropyrrolidin-1-yl)-phenyl 1804. allyl 4-((R)-3-fluoropyrrolidin-1-yl)-phenyl 1805. allyl 4-(2,2-difluoropyrrolidin-1-yl)-phenyl 1806. allyl 4-(3,3-difluoropyrrolidin-1-yl)-phenyl 1807. allyl 4-(2-methylpyrrolidin-1-yl)-phenyl 1808. allyl 4-((S)-2-methylpyrrolidin-1-yl)-phenyl 1809. allyl 4-((R)-2-methylpyrrolidin-1-yl)-phenyl 1810. allyl 4-(3-methylpyrrolidin-1-yl)-phenyl 1811. allyl 4-((S)-3-methylpyrrolidin-1-yl)-phenyl 1812. allyl 4-((R)-3-methylpyrrolidin-1-yl)-phenyl 1813. allyl 4-(1-methylpyrrolidin-2-yl)-phenyl 1814. allyl 4-((S)-1-methylpyrrolidin-2-yl)-phenyl 1815. allyl 4-((R)-1-methylpyrrolidin-2-yl)-phenyl 1816. allyl 4-(1-methylpyrrolidin-3-yl)-phenyl 1817. allyl 4-((S)-1-methylpyrrolidin-3-yl)-phenyl 1818. allyl 4-((R)-1-methylpyrrolidin-3-yl)-phenyl 1819. allyl 4-(2,2-dimethylpyrrolidin-1-yl)-phenyl 1820. allyl 4-(3,3-dimethylpyrrolidin-1-yl)-phenyl 1821. allyl 4-(2-trifluoromethylpyrrolidin-1-yl)-phenyl 1822. allyl 4-((S)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 1823. allyl 4-((R)-2-trifluoromethylpyrrolidin-1-yl)- phenyl 1824. allyl 4-(3-trifluoromethylpyrrolidin-1-yl)-phenyl 1825. allyl 4-((S)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 1826. allyl 4-((R)-3-trifluoromethylpyrrolidin-1-yl)- phenyl 1827. allyl 4-(2-oxopyrrolidin-1-yl)-phenyl 1828. allyl 4-(2-oxo-oxazolidin-3-yl)-phenyl 1829. allyl 4-(piperidin-1-yl)-phenyl 1830. allyl 4-(2-methylpiperidin-1-yl)-phenyl 1831. allyl 4-((S)-2-methylpiperidin-1-yl)-phenyl 1832. allyl 4-((R)-2-methylpiperidin-1-yl)-phenyl 1833. allyl 4-(piperazin-1-yl)-phenyl 1834. allyl 4-(4-methylpiperazin-1-yl)-phenyl 1835. allyl 4-(morpholin-4-yl)-phenyl 1836. allyl 4-(thiomorpholin-4-yl)-phenyl 1837. allyl 4-(1-oxo-thiomorpholin-4-yl)-phenyl 1838. allyl 4-(1,1-dioxo-thiomorpholin-4-yl)-phenyl 1839. allyl 4-(pyrrol-1-yl)-phenyl 1840. allyl 4-(pyrrol-2-yl)-phenyl 1841. allyl 4-(pyrrol-3-yl)-phenyl 1842. allyl 4-(1-methylpyrrol-2-yl)-phenyl 1843. allyl 4-(1-methylpyrrol-3-yl)-phenyl 1844. allyl 4-(furan-2-yl)-phenyl 1845. allyl 4-(furan-3-yl)-phenyl 1846. allyl 4-(thiophen-2-yl)-phenyl 1847. allyl 4-(thiophen-3-yl)-phenyl 1848. allyl 4-(5-propylthien-2-yl)-phenyl 1849. allyl 4-(pyrazol-1-yl)-phenyl 1850. allyl 4-(pyrazol-3-yl)-phenyl 1851. allyl 4-(pyrazol-4-yl)-phenyl 1852. allyl 4-(1-methyl-1H-pyrazol-4-yl)-phenyl 1853. allyl 4-(1-ethyl-1H-pyrazol-4-yl)-phenyl 1854. allyl 4-(1-methyl-1H-pyrazol-5-yl)-phenyl 1855. allyl 4-(1H-imidazol-2-yl)-phenyl 1856. allyl 4-(imidazol-1-yl)-phenyl 1857. allyl 4-(1-methylimidazol-2-yl)-phenyl 1858. allyl 4-(oxazol-2-yl)-phenyl 1859. allyl 4-(oxazol-4-yl)-phenyl 1860. allyl 4-(oxazol-5-yl)-phenyl 1861. allyl 4-(isoxazol-3-yl)-phenyl 1862. allyl 4-(isoxazol-4-yl)-phenyl 1863. allyl 4-(isoxazol-5-yl)-phenyl 1864. allyl 4-([1,2,3]-triazol-1-yl)-phenyl 1865. allyl 4-([1,2,4]-triazol-1-yl)-phenyl 1866. allyl 4-([1,2,3]-triazol-2-yl)-phenyl 1867. allyl 4-(4H-[1,2,4]-triazol-3-yl)-phenyl 1868. allyl 4-([1,2,4]-triazol-4-yl)-phenyl 1869. allyl 4-(2H-[1,2,3]-triazol-4-yl)-phenyl 1870. allyl 4-(4-methyl-4H-[1,2,4]-triazol-3-yl)-phenyl 1871. allyl 4-(2-methyl-2H-[1,2,3]-triazol-4-yl)-phenyl 1872. allyl 4-([1,3,4]-oxadiazol-2-yl)-phenyl 1873. allyl 4-([1,2,4]-oxadiazol-3-yl)-phenyl 1874. allyl 4-([1,2,4]-oxadiazol-5-yl)-phenyl 1875. allyl 4-([1,2,3]-oxadiazol-4-yl)-phenyl 1876. allyl 4-([1,2,3]-oxadiazol-5-yl)-phenyl 1877. allyl 4-([1,2,3]-thiadiazol-4-yl)-phenyl 1878. allyl 4-(1H-tetrazol-5-yl)-phenyl 1879. allyl 4-(tetrazol-1-yl)-phenyl 1880. allyl 4-(2-methyl-2H-tetrazol-5-yl)-phenyl 1881. allyl 4-(1-methyl-1H-tetrazol-5-yl)-phenyl 1882. allyl 4-furazan-3-yl-phenyl 1883. allyl 4-(pyrid-2-yl)-phenyl 1884. allyl 4-(pyrid-3-yl)-phenyl 1885. allyl 4-(pyrid-4-yl)-phenyl 1886. allyl 4-(pyrimidin-2-yl)-phenyl 1887. allyl 4-(pyrimidin-4-yl)-phenyl 1888. allyl 4-(pyrimidin-5-yl)-phenyl 1889. allyl 5-isopropylthiophen-2-yl 1890. allyl 2-chlorothiophen-5-yl 1891. allyl 2,5-dichlorothiophen-4-yl 1892. allyl 2,3-dichlorothiophen-5-yl 1893. allyl 2-chloro-3-nitrothiophen-5-yl 1894. allyl 2-(phenylsulfonyl)-thiophen-5-yl 1895. allyl 2-(pyridin-2-yl)thiophen-5-yl 1896. allyl 2-(5-(trifluoromethyl)isoxazol-3-yl)- thiophen-5-yl 1897. allyl 2-(2-methylthiazol-4-yl)-thiophen-5-yl 1898. allyl 1-methyl-1H-imidazol-4-yl 1899. allyl 1,2-dimethyl-1H-imidazol-4-yl 1900. allyl 3,5-dimethylisoxazol-4-yl 1901. allyl thiazol-2-yl 1902. allyl 4-methylthiazol-2-yl 1903. allyl 4-isopropylthiazol-2-yl 1904. allyl 4-trifluoromethylthiazol-2-yl 1905. allyl 5-methylthiazol-2-yl 1906. allyl 5-isopropylthiazol-2-yl 1907. allyl 5-trifloromethylthiazol-2-yl 1908. allyl 2,4-dimethylthiazol-5-yl 1909. allyl 2-acetamido-4-methylthiazol-5-yl 1910. allyl 4H-[1,2,4]triazol-3-yl 1911. allyl 5-methyl-4H-[1,2,4]triazol-3-yl 1912. allyl 4-methyl-4H-[1,2,4]triazol-3-yl 1913. allyl 5-isopropyl-4H-[1,2,4]triazol-3-yl 1914. allyl 5-trifluoromethyl-4H-[1,2,4]triazol-3-yl 1915. allyl 4,5-dimethyl-4H-[1,2,4]triazol-3-yl 1916. allyl 5-isopropyl-4-methyl-4H-[1,2,4]triazol-3-yl 1917. allyl 5-trifluoromethyl-4-methyl-4H- [1,2,4]triazol-3-yl 1918. allyl [1,3,4]thiadiazol-2-yl 1919. allyl 5-methyl-[1,3,4]thiadiazol-2-yl 1920. allyl 5-isopropyl-[1,3,4]thiadiazol-2-yl 1921. allyl 5-trifluoromethyl-[1,3,4]thiadiazol-2-yl 1922. allyl 3-bromo-2-chloropyrid-5-yl 1923. allyl 2-(4-morpholino)-pyrid-5-yl 1924. allyl 2-phenoxypyrid-5-yl 1925. allyl (2-isopropyl)-pyrimidin-5-yl 1926. allyl (5-isopropyl)-pyrimidin-2-yl 1927. allyl 8-quinolyl 1928. allyl 5-isoquinolyl 1929. allyl 2-(trifluoroacetyl)-1,2,3,4- tetrahydroisoquinolin-7-yl 1930. allyl 5-chloro-3-methylbenzothiophen-2-yl 1931. allyl 3,4-dihydro-4-methyl-2H- benzo[b][1,4]oxazinyl 1932. allyl benzothiazol-6-yl 1933. allyl benzo[2,1,3]oxadiazol-4-yl 1934. allyl 5-chlorobenzo[2,1,3]oxadiazol-4-yl 1935. allyl 7-chlorobenzo[2,1,3]oxadiazol-4-yl 1936. allyl benzo[2,1,3]thiadiazol-4-yl 1937. allyl 6-chloroimidazo[2,1-b]thiazolyl

Compounds I of the present invention can be synthesized as outlined in the synthetic routes A, B and C below.

In scheme 1, A, Ar, G, n, R², and R⁴ are as defined above. R′ is either R¹ or is a pre-cursor of R¹.

Route A

In route A, the amino compound (II-1) is reacted with a suitable sulfonic acid derivative to give the sulfonamide (I-1) (E=NH). A suitable sulfonic acid derivative is e.g. the sulfonyl chloride Ar—SO₂Cl. The sulfonation reaction is preferably carried out in the presence of a base, according to standard procedures in the art. In the reaction depicted in the above scheme 1, the sulfonation takes place under the reaction conditions which are customary for preparing arylsulfonamide compounds or arylsulfonic esters, respectively, and which are described, for example, in J. March, Advanced Organic Chemistry, 3^(rd) edition, John Wiley & Sons, New York, 1985 page 444ff and the literature cited therein, European J. Org. Chem. 2002 (13), pp. 2094-2108, Tetrahedron 2001, 57 (27) pp. 5885-5895, Bioorganic and Medicinal Chemistry Letters, 2000, 10(8), pp. 835-838 and Synthesis 2000 (1), pp. 103-108. The reaction customarily takes place in an inert solvent, for example in an ether, such as diethyl ether, diisopropyl ether, methyl tert-butyl ether or tetrahydrofuran, a halohydrocarbon, such as dichloromethane, an aliphatic or cycloaliphatic hydrocarbon, such as pentane, hexane or cyclohexane, or an aromatic hydrocarbon, such as toluene, xylene, cumene and the like, or in a mixture of the abovementioned solvents. The reaction with Cl—SO₂—Ar is customarily carried out in the presence of an auxiliary base. Suitable bases are inorganic bases, such as sodium arbonate or potassium arbonate, or sodium hydrogencarbonate or potassium hydrogencarbonate, and organic bases, for example trialkylamines, such as triethylamine, or pyridine compounds, such as pyridine, lutidine and the like. The latter compounds can at the same time serve as solvents. The auxiliary base is customarily employed in at least equimolar quantities, based on the amine compound (II-1).

Prior to the sulfonation reaction, the radical NH₂ can be converted into a NR⁵′ group, in which R⁵′ has the meanings different from hydrogen which are specified for R⁵ (not shown in scheme 1).

If in the resulting sulfonamide (I′-1) R′ is not the desired radical R¹ but a precursor thereof, the compound can be modified as outlined below to obtain the desired substituent R¹. A precursor is a radical which can be easily removed and replaced by the desired group R¹ or which can be modified to give R¹. The precursor can also be an N-protective group.

If R′ is allyl, the allyl group can be cleaved to obtain a compound wherein R′ is hydrogen. The cleavage of the allyl group is achieved, for example, by reacting compound (I′-1) [R′=allyl] with an allyl trapping agent, such as mercaptobenzoic acid or 1,3-dimethylbarbituric acid, in the presence of catalytic quantities of palladium (0) compounds or palladium compounds which are able to form a palladium(0) compound under reaction conditions, e.g. palladium dichloride, tetrakis(triphenylphosphine)palladium(0) or tris(dibenzylideneacetone)dipalladium(0), advantageously in combination with phosphine ligands, e.g. triarylphosphines, such as triphenylphosphine, trialkylphosphines, such as tributylphosphine, and cycloalkylphosphines, such as tricyclohexylphosphine, and especially with phosphine chelate ligands, such as 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl or 1,4-bis(diphenylphosphino)butane, using methods known from the literature (with regard to eliminating N-allyl in the presence of mercaptobenzoic acid, see WO 94/24088; with regard to eliminating in the presence of 1,3-dimethylbarbituric acid, see J. Am. Chem. Soc. 2001, 123 (28), pp. 6801-6808 and J. Org. Chem. 2002, 67(11) pp. 3718-3723). Alternatively, the cleavage of N-allyl can also be effected by reacting in the presence of rhodium compounds, such as tris(triphenylphosphine)chlororhodium(I), using methods known from the literature (see J. Chem. Soc., Perkin Transaction I: Organic and Bio-Organic Chemistry 1999 (21) pp. 3089-3104 and Tetrahedron Asymmetry 1997, 8(20), pp. 3387-3391).

If R′ is benzyl, this substituent may also be cleaved to obtain a compound (I′-1) wherein R′ is H. The reaction conditions for the cleavage are known in the art. Typically, the benzyl group is removed by a hydrogenation reaction in the presence of a suitable Pd catalyst, such as Pd on carbon or palladium hydroxide.

R′ can also be a protective group. The protective group may be removed to yield a compound (I′-1) wherein R′ is H. Suitable protective groups are known in the art and are, for example, selected from tert-butoxycarbonyl (boc), benzyloxycarbonyl (Cbz), 9-fluorenylmethoxycarbonyl (Fmoc), triphenylmethyl (Trt) and nitrobenzenesulfenyl (Nps). A preferred protective group is boc. The protective groups can be removed by known methods, such as treatment of the protected amine with an acid, e.g halogen acid, such as HCl or HBr, or trifluoroacetic acid, or by hydrogenation, optionally in the presence of a Pd catalyst.

The resulting compound, wherein R′ is H, can then be reacted, in a known manner, in the sense of an alkylation, with a compound R¹—X. In this compound, R¹ is C₁-C₄-alkyl, C₃-C₆-cycloalkyl, C₁-C₄-haloalkyl, C₁-C₄-alkoxy-C₁-C₄-alkyl or C₃-C₆-cycloalkyl-C₁-C₄-alkyl and X is a nucleophilically displaceable leaving group, e.g. halogen, trifluoroacetate, alkylsulfonate, arylsulfonate, alkyl sulfate and the like. The reaction conditions which are required for the alkylation have been adequately disclosed, e.g. in Bioorganic and Medicinal Chemistry Lett. 2002, 12(7), pp. 2443-2446 and also 2002, 12(5), pp. 1917-1919.

The alkylation can also be achieved, in the sense of a reductive amination, by reacting the compound (I′-1), wherein R′=H, with a suitable ketone or aldehyde in the presence of a reducing agent, e.g. in the presence of a borohydride such as sodium borohydride, sodium cyanoborohydride or sodium triacetoxyborohydride. The skilled person is familiar with the reaction conditions which are required for a reductive amination, e.g. from Bioorganic and Medicinal Chemistry Lett. 2002, 12(5), pp. 795-798 and 12(7) pp. 1269-1273.

In case R′ is hydrogen, the resulting sulfonamide (I′-1) can further be reacted with an acyl halide to obtain a compound of the formula I wherein R¹ is C₁-C₃-alkylcarbonyl. The carbonyl group in these compounds can be reduced with diborane to obtain compounds of the general formula I, wherein R¹ is C₂-C₄-alkyl. The carbonyl group can also be reacted with a fluorinating agent to obtain a compound I wherein R¹ is 1,1-difluoroalkyl. Acylation and reduction can be achieved by standard methods, which are discussed in Jerry March, Advanced Organic Chemistry, 3rd ed. J. Wiley & Sons, New York 1985, p. 370 and 373 (acylation) and p. 1099 f. and in the literature cited in this publication (with regard to acylation, see also Synth. Commun. 1986, 16, p. 267, and with regard to reduction, see also J. Heterocycl. Chem. 1979, 16, p. 1525).

Route B

In route B, the bromo substituted compound (II-2) is reacted with an appropriate sulfonamide ArSO₂NHR⁵ to give the sulfonamide (I′-1). The reaction is generally carried out under activating conditions, e.g. under microwave conditions. Pd, especially Pd(0), or Cu catalysts may also be used for coupling (see, e.g. Org. Lett. 2000, 2, 1101; J. Am. Chem. Soc. 2002, 124, 6043; Org. Lett. 2003, 5, 4373; Tetrahedron Lett. 2003, 44, 3385). Examples for suitable Pd (0) catalysts are tetrakis(triphenylphosphine)palladium(0) and Pd₂(dba)₃ (tris(dibenzylideneacetone)-dipalladium(0)), which are customarily used in the presence of a tri(substituted)phosphine, e.g. a triarylphosphine such as triphenylphosphine, tritolylphosphine or xantphos, tri(cyclo)alkylphosphine such as tris-n-butylphosphine, tris(tert.-butyl)phosphine or tris(cyclohexylphosphine). This route is especially useful in cases where the corresponding sulfonyl chloride is not available.

Alternatively, the bromo substituent may be replaced by an amino substituent, e.g. by reacting with a benzophenone imine or with lithium bis(trimethylsilyl)amide in the presence of a palladium(0) compound such as tris(dibenzylideneacetone)dipalladium(0) in the presence of a tri(substituted)phosphine, e.g. a triarylphosphine such as triphenylphosphine or tritolylphosphine, tri(cyclo)alkylphosphine such as tris-n-butylphosphine, tris(tert.-butyl)phosphine or tris(cyclohexylphosphine), preferably in the presence of a base such as sodium hydride according to the method described in (see, e.g. J. Org. Chem., 68 (2993) pp 8274-8276, J. Org. Chem. 2000, 65, 2612). The resulting amino compound may then be subjected to the sulfonation reaction of route A.

Route C

In route C, compound (II-3) is reacted with a mercapto compound HS—Ar in the presence of a base, such as sodium hydride or sodium alkoxide or with an alkali metal salt thereof thereby yielding a thioether compound. The thioether moiety is then oxidized to a sulfone moiety, e.g. by oxone, to yield the sulfone (I′-2).

The substituent Ar can be varied by either using different sulfonyl chlorides or by modifying the substituents of the cyclic group Ar after the formation of the sulfonamide (I′-1) by known methods. For example, a bromine substituent of the Ar group may be replaced by an N-bound pyrrolidinyl group according to the procedure described in Tetrahedron Asym. 1999, 10, 1831. A bromine substituent of the Ar group may be replaced by an isopropenyl group according to a Stille coupling where the bromo compound is reacted with an alkenyl tributyl stannate in the presence of an appropriate Pd coupling catalyst, e.g. tetrakistriphenylphosphine palladium(0) (see, e.g. Tetrahedron, 2003, 59(34), 6545 and Bioorg. Med. Chem. 1999, 7(5), 665). The isopropenyl group may then be converted into the isopropyl group by known hydrogenation methods.

Compounds of formula (II) (II-1, II-2 and II-3) can be synthesized by as shown below. 1. Synthesis of Compounds (II-1)

The conversion of the acid (III) into its methyl ester (IV) is performed by standard techniques, e.g. as described in Jerry March, Advanced Organic Chemistry, John Wiley, 3^(rd) edition, page 348ff. For instance, the acid is transformed into the corresponding acid chloride, e.g by reacting it with SOCl₂. The chloride is then converted into the ester by reaction with methanol.

The reduction in step (ii) is suitably carried out under standard conditions for the conversion of carboxylic esters into alcohols. Appropriate reaction conditions and reducing agents are described, e.g. in Jerry March, Advanced Organic Chemistry, John Wiley, 3^(rd) edition, page 1093ff. Typical reducing agents are metal hydrides and complex hydrides. Examples of suitable metal hydrides include BH₃, 9-BBN, AlH₃ and AlH(i-Bu)₂ (DIBAL-H), suitably in the presence of complexing solvents, such as tetrahydrofuran and diethylether. Complex hydrides are e.g. NaBH₄, LiAlH₄ and LiAlH(OR)₃, where R is C₁-C₄-alkyl, such as methyl, ethyl, isobutyl or tert-butyl. A preferred reducing agent is LiAlH₄. The reduction is suitably carried out in complexing solvents, such as open-chain and cyclic ethers, e.g. tetrahydrofuran, diethyl ether, dipropyl ether, diisopropyl ether, dibutyl ether and methylbutyl ether. A preferred solvent is tetrahydrofuran.

In the mesylation step (iii), the alcohol functionality is converted into a better leaving group. The mesylation is performed under standard conditions, e.g. by reacting the alcohol with methansulfonyl chloride in the presence of a base. Suitable bases are, among others, alkyl amines, such as diethyl amine, triethyl amine and ethyldiisopropyl amine. In this step, other functionalities representing good leaving groups, such as trifluoroacetate, other alkylsulfonates, arylsulfonates, e.g. tosylates, alkyl sulfates and the like tosylate, may be introduced instead of the methansulfonyl group.

In the cyclisation step (iv), compound (VI) or a suitable derivative thereof is reacted with a primary amine NH₂R′. In case the primary amine is a liquid, it may also be used as solvent, no further solvent being necessary. If the amine is visquous or a solid, the reaction is advantageously carried out in a suitable solvent.

The reaction of step (v) takes place under the reaction conditions which are customary for a nitration reaction on an aromatic radical and which are described, for example, in Jerry March, Advanced Organic Chemistry, John Wiley, 3^(rd) edition, page 468ff, Tetrahedron 1999, 55(33), pp. 10243-10252, J. Med. Chem. 1997, 40(22), pp. 3679-3686 and Synthetic Communications, 1993, 23(5), pp. 591-599. For example, compound (VII) is reacted with concentrated nitric acid or a nitrate, such as potassium or sodium nitrate, in the presence of concentrated sulfuric acid. The resulting product (VIII) may in the form of different regioisomers (e.g. ortho, meta or para, if A is phenyl or a 6-membered hetaryl. In the case of A being phenyl or a 6-membered hetaryl, the para-nitro compound generally predominates. However, some ortho product may also be obtained, whereas the meta product is not produced at all or only in neglectable amounts. By separating ortho and para products, compounds of formula I, wherein A is 1,4-bound aryl or hetaryl as well as compounds I, wherein A is 1,2-bound aryl or hetaryl, are accessible via the reaction path shown in scheme 2.

In step (vi), the nitro group in (VIII) is reduced to an NH₂ group. Subsequently, the NH₂ group can be converted into a —NR^(5′) group, in which R^(5′) has the meanings different from hydrogen which are specified for R⁵. The reaction conditions which are required for step (vi) correspond to the customary conditions for reducing aromatic nitro groups which have been described extensively in the literature (see, for example, J. March, Advanced Organic Chemistry, 3rd ed., J. Wiley & Sons, New-York, 1985, p. 1183 and the literature cited in this reference). The reduction is achieved, for example, by reacting the nitro compound VII with a metal such as iron, zinc or tin under acidic reaction conditions, i.e. using nascent hydrogen, or using a complex hydride such as lithium aluminum hydride or sodium borohydride, preferably in the presence of transition metal compounds of nickel or cobalt such as NiCl₂(P(phenyl)₃)₂, or CoCl₂, (see Ono et al. Chem. Ind. (London), 1983 p. 480), or using NaBH₂S₃ (see Lalancette et al. Can. J. Chem. 49, 1971, p. 2990), with it being possible to carry out these reductions, depending on the given reagent, in substance or in a solvent or diluent. Alternatively, the reduction can be carried out with hydrogen in the presence of a transition metal catalyst, e.g. using hydrogen in the presence of catalysts based on platinum, palladium, nickel, ruthenium or rhodium. The catalysts can contain the transition metal in elemental form or in the form of a complex compound, of a salt or of an oxide of the transition metal, with it being possible, for the purpose of modifying the activity, to use customary coligands, e.g. organic phosphine compounds, such as triphenylphosphine, tricyclohexylphosphine or tri-n-butylphosphines or phosphites. The catalyst is customarily employed in quantities of from 0.001 to 1 mol per mol of nitro compound, calculated as catalyst metal. In a preferred variant, the reduction is effected using tin(II) chloride in analogy with the methods described in Bioorganic and Medicinal Chemistry Letters, 2002, 12(15), pp. 1917-1919 and J. Med. Chem. 2002, 45(21), pp. 4679-4688. The reaction of VII with tin(II) chloride is preferably carried out in an inert organic solvent, preferably an alcohol such as methanol, ethanol, isopropanol or butanol.

For compounds, wherein n is 1 and A is phenylene (i.e. (I) is N-(pyrrolidin-3-yl)-phenylsulfonamide), starting compound (III) is e.g. commercially available (S) or (R) phenylsuccinic acid or a racemic mixture thereof. By starting from enantiomerically pure (S)- or (R)-compound (III), pure (S)- or (R) may be obtained: a) (S) Isomer

In step (i), commercially available (S)-phenylsuccinic acid (II-S) is converted into the methyl ester (III); this is reduced to the alcohol (IV) which is reacted with methylsulfonylchloride. Cyclisation with a primary amine gives the phenyl pyrrolidine (VI). The phenyl group is first nitrated, then the nitro group is reduced to an amino function which is reacted with a sulfonyl chloride to give the desired sulfonyl amide (I′-S).

a) (R) Isomer

The (R)-isomer can be obtained in an analogous way starting from commercially available (R)-phenylsuccinic acid (III-R):

c) Isomeric Mixtures

Isomeric mixtures of compound I′-S and I′-R can be obtained by starting from racemic III or from a mixture of III-S and III-R.

The skilled person will appreciate that the synthesis described in scheme 2 is also suitable for the preparation of compounds (II) and consequently for compounds (I), wherein R², R³ and R⁴ are different from H, e.g. by starting from the correspondingly substituted compound (III). The same applies to the synthesis of enantiomerically pure (I) which can be synthesized by starting from the corresponding enantiomer (III).

2. Synthesis of Compounds (II-2)

Compounds of formula (II-2) can be synthesized by carrying out in step (v) of scheme 2 a halogenation instead of a nitration. Halogenation reactions of aryl and hetaryl groups are widespread standard methods and are, e.g., discussed in Jerry March, Advanced Organic Chemistry, John Wiley, 3^(rd) edition page 476 ff.

3. Synthesis of Compounds (II-3)

The synthesis of these compounds also belongs to standard reaction methods and can be performed by monohalogenating the methyl group of a methyl-substituted aryl or hetaryl compound.

4. Specific Syntheses

4.1 Synthesis of Compounds, Wherein n is 5 (Pyrrolidinyl Sulfone Derivatives)

4.1.1

In scheme 3, A and R³ are as defined above.

The pyrrolidine ring is also available by a [3+2] dipolar cycloaddition of a non-stabilized azomethine ylid to a 1-alkenylaryl or hetaryl derivative (IX) (e.g. a vinyl benzene, R³═H). This procedure is generally described in J. Org. Chem. 1987, 52, 235. The precursor of the ylid, the amine N(CH₂R^(b))(CH₂SiMe₃)(CH₂OCH₃) (X), is commercially available or can be synthesized from NH₂(CH₂R^(b)), Me₃SiCH₂Cl and HCHO in the presence of methanol.

The 1-alkenyl-(hetero)aromatic compound (IX) can be synthesized e.g. by a Stille coupling of a halogeno benzene, e.g. a bromo benzene, with the corresponding alkenyl tributyl stannate, such as vinyl or isobutenyl tributyl stannate, in the presence of an appropriate Pd coupling catalyst, e.g. tetrakistriphenylphosphine palladium(0) (see, e.g. Tetrahedron, 2003, 59(34), 6545 and Bioorg. Med. Chem. 1999, 7(5), 665). By choosing a special Stille isomer (e.g. cis- or trans-isobutenyl tributyl stannate), the corresponding cis- or trans alkyl phenyl pyrrolidine can be prepared selectively.

Alternatively, the 1-alkenyl-(hetero)aromatic compound (IX) can be synthesized by a Wittig reaction of aryl aldehyde with a Wittig reagent such as PPh₃=CHR (R is H, or C₁-C₃-alkyl). Conditions for the Wittig reaction are well known in the art and are, e.g. discussed in Jerry March, Advanced Organic Chemistry, John Wiley, 3^(rd) edition, page 845 ff.

Advantageously, the 1-(hetero)alkenyl-aromatic compound (IX) further carries a nitro group or another halogeno substituent (X=NO₂ or halogen). In this case, the subsequent reaction steps can be carried out as outlined in route A or B. If X=H, the A ring may be first nitrated as described in scheme 2, step (v) and then subjected to the reaction of scheme 2, step (vi) and scheme 1, route A; or ring A may be halogenated and then subjected to the procedure of route B.

The group CH₂R^(b) of the precursor amine advantageously corresponds either to the desired group R¹ of the final compound I or is alternatively a cleavable group, such as benzyl, which can be removed to give the N-unsubstituted pyrrolidine. The latter can subsequently be functionalized as described above (see route A).

The synthesis of hetarylpyrrolidines is e.g. described in Chem. Pharm. Bull., 1985, 33, 2762-66; J. Heterocyclic Chemistry, 1996, 1995-2005; J. Heterocyclic Chemistry, 2001, 38, 1039-1044; Tetrahedron Letters, 1992, 33, 44, 6607-10; Heterocycles, 1998, 48, 12, 2535-2541 for A being pyridylene. The synthesis of vinyl-substituted thiophene and thiazol is e.g. described in Bioorg. Med. Chem. 1999, 7(5), 665. 4.1.2

Phenylpyrrolidines can also be prepared by a [3+2] dipolar cycloaddition of a non-stabilized azomethine ylid to a 1-alkynylbenzene (XII) (see, e.g., Tetrahedron 1996, 52, 59). The resulting pyrroline (XIII) or the final product (I′) is then hydrogenated to the corresponding pyrrolidine (XI). If the hydrogenation is carried out under chiral conditions, e.g. by using chiral catalysts, the enantiomerically pure phenylpyrrolidine compounds can be obtained. Chiral hydrogenation catalysts are well known in the art. The subsequent conversion to the desired sulfonamide can be carried out as described in route A or B.

4.1.3

Alternatively, hetarylpyrrolidinyl compounds can be prepared from hetaryl halides which are subjected to a Pd-mediated cross coupling with an organozinc pyrrolidine compound. This process is described in further detail below in route F. In this alternative, too, the hetaryl halide advantageously carries a nitro group. In this case, the conversion to the desired sulfonamides can be carried out as described in route A. Alternatively, the hetaryl halide carries a halogen atom. In this case, the conversion to the desired sulfonamides can be achieved as described in route B.

4.1.4

Compounds I, wherein n is 1, G is CH₂, A is 1,3-bound arylene or hetarylene and E is NH, can be prepared in a similar way compared to the 1,4-bound compound from a 3-aminoaryl or hetaryl-pyrrolidine which is reacted with an appropriate sulfonyl chloride. Advantageously, the N-atom of the pyrrolidine ring is protected by a urathane-based protective group, like benzyloxycarbonyl (cbz) and tert-butyloxycarbonyl (boc). This group may be replaced by the desired substituent R¹ by treating the compound with an acid, such as hydrochloric acid, thus removing the acid group, and then introducing the desired substituent as described in route A.

The 3-aminoaryl or hetaryl-pyrrolidine may be prepared by way of a Heck reaction where a protected pyrroline is reacted with 1-iodo-3-nitrobenzene under typical Heck conditions. Catalytic hydrogenation of the pyrroline double bond and reduction of the nitro group according to the procedure described in scheme 2 yields the desired product.

4.2 Synthesis of N-(azetidin-3-yl)-sulfonamides

Compounds I, wherein n is 0 (azetidine compounds) can be synthesized as follows:

In scheme 5, Ar and R¹ are as defined above. X and Y are, independently of each other, CH or N.

Starting from 1-benzhydryl-azetidin-3-ol, Pd-mediated deprotection of the amine (Tetrahedron 2002, 58, 9865-9870), carbamate formation and subsequent halogenation generate an intermediate that undergoes Zn insertion (Tetrahedron 1987, 43, 2203-2212; J. Org. Chem. 1988, 53, 2390-2392). The thus obtained organozinc species can react with an appropriate 2-halo-nitro-ring (Synlett 1998, 4, 379-380; J. Am. Chem. Soc. 2003, 125, 12527-12530) to give the nitro-aryl-azetidine core. If one utilizes a 2-halo-halo-ring, there is also the possibility to realize the direct coupling between the aryl-azetidine halide and the appropriate sulfonamides (Org. Lett. 2000, 2, 1101-1104; J. Am. Chem. Soc. 2002, 124, 6043-6048; Org. Lett. 2003, 5, 4373-4376; Tetrahedron Lett. 2003, 44, 3385-3386). The amine may be regenerated by cleavage of the carbamate (e.g. with trifluoroacetic acid in the case of a Boc carbamate) and subsequently converted into an amide by reaction with the appropriate acyl chloride. The nitro group can be reduced to the amine via tin chloride or catalytic hydrogenation (e.g. Pd—C) and then converted to the desired sulfonamide by reaction with the appropriate sulfonyl chloride in the presence of a base such as pyridine. Ultimate reduction of the amide via hydroboration furnishes the final compounds.

Of course, the reaction also applies to compounds wherein the (hetero)aromatic ring bound to thr azetidine group is a 5-membered heterocyclic radical, e.g. thienyl.

4.3 Synthesis of N-(piperidin-3-yl)-sulfonamides

Further to the above-described syntheses (routes A, B and C), compounds I, wherein n is 2 and E is NR⁵ (piperidin-3-yl sulfonamides) may be prepared by starting from commercially available 3-aryl or 3-hetaryl piperidines. These starting compounds may then be converted into the amino-substituted or halogenated derivative and then be subjected to the synthetic path of route A or B.

A skilled person will readily appreciate that compounds of the formula I can also be obtained from structurally similar compounds by functional group interconversion. In particular N-bound radicals R^(a) can be introduced into compounds of the formula I by reacting the corresponding halogen compound, i.e. a compound of the formula I, which instead of R^(a) carries a halogen atom, in particular a bromine or iodine atom, with a primary or secondary amine in the presence of a base, preferably also in the presence of a palladium catalyst in terms of a Buchwald-Hartwig reaction.

If not indicated otherwise, the above-described reactions are generally carried out in a solvent at temperatures between room temperature and the boiling temperature of the solvent employed. Alternatively, the activation energy which is required for the reaction can be introduced into the reaction mixture using microwaves, something which has proved to be of value, in particular, in the case of the reactions catalyzed by transition metals (with regard to reactions using microwaves, see Tetrahedron 2001, 57, p. 9199 ff. p. 9225 ff. and also, in a general manner, “Microwaves in Organic Synthesis”, André Loupy (Ed.), Wiley-VCH 2002.

The sulfonylchlorides Cl—SO₂—Ar are either commercially available or can be prepared according to standard synthetic methods. Sulfonylchlorides containing a fluorinated radical R^(a) may be prepared by different synthetic routes, e.g. by reacting suitable hydroxy or oxo precursor (e.g. a compound Cl—SO₂—Ar, carrying a hydroxy or oxo substituted radical) with fluorinating reagents like DAST (diethylaminosulfurtrifluoride), morpholine-DAST, deoxo-fluor(bis(2-methoxyethyl)aminosulfur trifluoride), Ishikawa's reagent (N,N-diethyl-(1,1,2,3,3,3-hexafluoropropyl)amine; Journal of Fluorine Chemistry, 1989, 43, 371-377). More conventionally, the hydroxy group of an aromatic compound which carries a hydroxy substituted radical but not a chlorosulfonyl group, is transformed into a leaving group which is then replace by a fluoride ion (J. Org. Chem., 1994, 59, 2898-22901; Tetrahedron Letters, 1998, 7305-6; J. Org. Chem., 1998, 63, 9587-9589, Synthesis, 1987, 920-21)). Subsequent direct chlorosulfonylation with chlorosulfonic acid (Heterocycles, 2001, 55, 9, 1789-1803; J. Org. Chem., 2000, 65, 1399-1406) or a two step process preparing first the sulfonic acid derivatives which are then transformed to the sulfonylchlorides with e.g. chlorosulfonic acid, phosphorous pentachloride (Eur. J. Med. Chem., 2002, 36, 809-828) and the like, yields the desired sulfonylchloride (Tetrahedron Letters, 1991, 33, 50 7787-7788)) Sulfonylchlorides may also be prepared by diazotation of suitable amine precursor Ar—NH₂ with sodium nitrite under acidic conditions and reaction with sulfur dioxide in acetic acid (scheme (iii); J. Org. Chem., 1960, 25, 1824-26); by oxidation of suitable heteroaryl-thiols HS—Ar or heteroaryl-benzyl-thioethers C₆H₅—CH₂—S—Ar with chlorine (Synthesis, 1998, 36-38; J. Am. Chem. Soc., 1950, 74, 4890-92); directly to the corresponding sulfonyl chlorides. The further are known in the art or may be prepared by standard methods. E.g. mercapto-pyrimidines or pyrimidinyl-benzylthioether precursors can e.g. be prepared according to literature (Chemische Berichte, 1960, 1208-11; Chemische Berichte, 1960, 95, 230-235; Collection Czechoslow. Chem. Comm., 1959, 24, 1667-1671; Austr. J. Chem., 1966, 19, 2321-30; Chemiker-Zeitung, 101, 6, 1977, 305-7; Tetrahedron, 2002, 58, 887-890; Synthesis, 1983, 641-645).

In the following schemes 6 to 8 several routes are shown which are suitable to prepare benzenesulfonyl chlorides carrying a fluorinated propyl radical.

The 4-(1,1-difluoropropan-2-yl)benzene-1-sulfonyl chloride intermediate can be prepared from the commercially available 2-phenylpropanoic acid. In the first step a) the 2-phenylpropanic acid is converted to the alkyl ester by esterification with an alcohol (e.g. methanol or ethanol) under acid catalysis (e.g. HCl, SO₂Cl₂). The ester can be reduced to the corresponding 2-phenyl propanal by a reducing agent such as DIBAL (diisobutylaluminium hydride). The aldehyde is converted to the 1,1-difluoro-2-propyl derivative by reaction with a suitable fluorinating reagent like DAST (diethylaminosulfurtrifluoride), morpholine-DAST, deoxo-fluor (bis(2-methoxyethyl)aminosulfur trifluoride), Ishikawa's reagent (N,N-diethyl-(1,1,2,3,3,3-hexafluoropropyl)amine; Journal of Fluorine Chemistry, 1989, 43, 371-377) (step b). The thus obtained 1,1-difluoro-2-phenylpropane can be converted into 4-(1,1-difluoro-2-propyl)benzenesulfonyl chloride by either direct chlorosulfonylation with chlorosulfonic acid (Heterocycles, 2001, 55, 9, 1789-1803; J. Org. Chem., 2000, 65, 1399-1406) (step c) or by a two step process preparing first the sulfonic acid derivatives (step d) which are then transformed to the sulfonylchlorides (step e) by reaction with e.g. chlorosulfonic acid, phosphorous pentachloride (Eur. J. Med. Chem., 2002, 36, 809-828); through diazotisation of suitable amine precursors with sodium nitrite under acidic conditions and reaction with sulfur dioxide in acetic acid (J. Org. Chem., 1960, 25, 1824-26); oxidation of suitable heteroaryl-thiols or heteroaryl-benzyl-thioethers with chlorine (Synthesis, 1998, 36-38; J. Am. Chem. Soc., 1950, 74, 4890-92) directly to the corresponding sulfonyl chlorides.

The synthesis shown in scheme 6 can also be performed using (R)-2-phenylpropanic acid and (S)-2-phenylpropanic acid respectively to give the corresponding chiral 4-(1,1-difluoropropan-2-yl)benzene-1-sulfonyl chlorides.

4-(1,1,1-Trifluoropropan-2-yl)benzene-1-sulfonyl chloride intermediate can be prepared from the commercially available 2,2,2-trifluoro-1-phenylethanone by a synthetic route shown in scheme 7. The ketone can be converted to the 3,3,3-trifluoro-2-phenylpropene by a Wittig reaction with a suitable ylide such as methylene-triphenylphosphane (prepared by reaction of methyltriphenylphosphonium halide and a suitable base such as lithium diisopropylamide or potassium tert-butoxide) or according to a Horner-Emmons reaction by reacting the ketone with a suitable phosphonate such as diethyl methylphosphonate and a suitable base such as lithium diisopropylamide or potassium tert-butoxide. The thus obtained 3,3,3-trifluoro-2-phenylpropene can then be reduced to the saturated alkane by catalytic hydrogenation (eg Pd—C) followed by conversion to the sulfonyl chloride by the methods described in scheme 6.

The synthesis of scheme 7 can also be performed using a chiral catalyst for the alkene hydrogenation to allow the preparation of the corresponding chiral 4-(1,1,1-triifluoropropan-2-yl)benzene-1-sulfonyl chlorides.

The 4-(1,1,1-trifluoropropan-2-yl)benzene-1-sulfonyl chloride can be also prepared from the commercially available 1-phenyl-ethanone by a four step procedure as shown in scheme 8. The ketone can be converted to the trifluoromethyl hydroxyl intermediate by reaction with trimethyl-trifluoromethyl-silane (Journal of Organic Chemistry, 2000, 65, 8848-8856; Journal of Fluorine Chemistry, 2003, 122, 243-246) which can then be converted to the trifluoromethyl bromide (Journal of the American Chemical Society, 1987, 109, 2435-4). Dehalogenation by catalytic hydrogenation (eg Pd—C) can then be followed by conversion to the sulfonyl chloride by the methods discussed above.

Examples of solvents which can be used are ethers, such as diethyl ether, diisopropyl ether, methyl tert-butyl ether or tetrahydrofuran, aprotic polar solvent, such as dimethylformamide, dimethyl sulfoxide, dimethoxyethane, and acetonitrile, aromatic hydrocarbons, such as toluene and xylene, ketones, such as acetone or methyl ethyl ketone, halohydrocarbons, such as dichloromethane, trichloromethane and dichloroethane, esters, such as ethyl acetate and methyl butyrate, carboxylic acids, such as acetic acid or propionic acid, and alcohols, such as methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, 2-butanol and tert.-butanol.

If desired, it is possible for a base to be present in order to neutralize protons which are released in the reactions. Suitable bases include inorganic bases, such as sodium carbonate, potassium carbonate, sodium hydrogen carbonate or potassium hydrogen carbonate, and, in addition, alkoxides, such as sodium methoxide or sodium ethoxide, alkali metal hydrides, such as sodium hydride, and also organometallic compounds, such as butyllithium compounds or alkylmagnesium compounds, or organic nitrogen bases, such as triethylamine or pyridine. The latter compounds can at the same time serve as solvents.

The crude product is isolated in a customary manner, for example by filtering, distilling off the solvent or extracting from the reaction mixture, etc. The resulting compounds can be purified in a customary manner, for example by means of recrystallizing from a solvent, by means of chromatography or by means of converting into an acid addition salt.

The acid addition salts are prepared in a customary manner by mixing the free base with a corresponding acid, where appropriate in solution in an organic solvent, for example a lower alcohol, such as methanol, ethanol or propanol, an ether, such as methyl tert-butyl ether or diisopropyl ether, a ketone, such as acetone or methyl ethyl ketone, or an ester, such as ethyl acetate.

The compounds according to the invention of the formula I are surprisingly highly selective dopamine D₃ receptor ligands which, because of their low affinity for other receptors such as D₁ receptors, D₄ receptors, α1-adrenergic and/or α2-adrenergic receptors, muscarinergic receptors, histamine receptors, opiate receptors and, in particular, dopamine D₂ receptors, give rise to fewer side-effects than do the classic neuroleptics, which are D₂ receptor antagonists. A compound of the invention can be a dopamine D₃ receptor agonist, including partial agonistic activity, or a dopamine D₃ receptor antagonist, including partial antagonistic activity.

The high affinity of the compounds according to the invention for D₃ receptors is reflected in very low in-vitro receptor binding constants (K_(i)(D₃) values) of as a rule less than 50 nM (nmol/l), preferably of less than 10 nM and, in particular of less than 5 nM. The displacement of [¹²⁵I]-iodosulpride can, for example, be used in receptor binding studies for determining binding affinities for D₃ receptors.

The selectivity of the compounds according to the invention, i.e. the ratio K_(i)(D₂)/K_(i)(D₃) of the receptor binding constants, is as a rule at least 50, preferably at least 100, even better at least 150. The displacement of [³H]SCH23390, [¹²⁵I] iodosulpride or [¹²⁵I] spiperone can be used, for example, for carrying out receptor binding studies on D₁, D₂ and D₄ receptors.

Because of their binding profile, the compounds can be used for treating diseases which respond to dopamine D₃ receptor ligands (or which are susceptible to treatment with a dopamine D₃ receptor ligand, respectively), i.e. they are effective for treating those medical disorders or diseases in which exerting an influence on (modulating) the dopamine D₃ receptors leads to an improvement in the clinical picture or to the disease being cured. Examples of these diseases are disorders or diseases of the central nervous system.

Disorders or diseases of the central nervous system are understood as meaning disorders which affect the spinal chord and, in particular, the brain. Within the meaning of the invention, the term “disorder” denotes disturbances and/or anomalies which are as a rule regarded as being pathological conditions or functions and which can manifest themselves in the form of particular signs, symptoms and/or malfunctions. While the treatment according to the invention can be directed toward individual disorders, i.e. anomalies or pathological conditions, it is also possible for several anomalies, which may be causatively linked to each other, to be combined into patterns, i.e. syndromes, which can be treated in accordance with the invention.

The disorders which can be treated in accordance with the invention are, in particular, psychiatric and neurological disturbances. These disturbances include, in particular, organic disturbances, including symptomatic disturbances, such as psychoses of the acute exogenous reaction type or attendant psychoses of organic or exogenous cause, e.g., in association with metabolic disturbances, infections and endocrinopathogies; endogenous psychoses, such as schizophrenia and schizotype and delusional disturbances; affective disturbances, such as depressions, mania and/or manic-depressive conditions; and also mixed forms of the above-described disturbances; neurotic and somatoform disturbances and also disturbances in association with stress; dissociative disturbances, e.g. loss of consciousness, clouding of consciousness, double consciousness and personality disturbances; disturbances in attention and waking/sleeping behavior, such as behavioral disturbances and emotional disturbances whose onset lies in childhood and youth, e.g. hyperactivity in children, intellectual deficits, in particular attention disturbances (attention deficit disorders), memory disturbances and cognitive disturbances, e.g. impaired learning and memory (impaired cognitive function), dementia, narcolepsy and sleep disturbances, e.g. restless legs syndrome; development disturbances; anxiety states, delirium; sexlife disturbances, e.g. impotence in men; eating disturbances, e.g. anorexia or bulimia; addiction; and other unspecified psychiatric disturbances.

The disorders which can be treated in accordance with the invention also include Parkinson's disease and epilepsy and, in particular, the affective disturbances connected thereto.

The addiction diseases include psychic disorders and behavioral disturbances which are caused by the abuse of psychotropic substances, such as pharmaceuticals or narcotics, and also other addiction diseases, such as addiction to gaming (impulse control disorders not elsewhere classified). Examples of addictive substances are: opioids (e.g. morphine, heroin and codeine), cocaine; nicotine; alcohol; substances which interact with the GABA chloride channel complex, sedatives, hypnotics and tranquilizers, for example benzodiazepines; LSD; cannabinoids; psychomotor stimulants, such as 3,4-methylenedioxy-N-methylamphetamine (ecstasy); amphetamine and amphetamine-like substances such as methylphenidate and other stimulants including caffeine. Addictive substances which come particularly into consideration are opioids, cocaine, amphetamine or amphetamine-like substances, nicotine and alcohol.

With regard to the treatment of addiction diseases, particular preference is given to those compounds according to the invention of the formula I which themselves do not possess any psychotropic effect. This can also be observed in a test using rats, which, after having been administered compounds which can be used in accordance with the invention, reduce their self administration of psychotropic substances, for example cocaine.

According to another aspect of the present invention, the compounds according to the invention are suitable for treating disorders whose causes can at least partially be attributed to an anomalous activity of dopamine D₃ receptors.

According to another aspect of the present invention, the treatment is directed, in particular, toward those disorders which can be influenced, within the sense of an expedient medicinal treatment, by the binding of preferably exogenously administered binding partners (ligands) to dopamine D₃ receptors.

The diseases which can be treated with the compounds according to the invention are frequently characterized by progressive development, i.e. the above-described conditions change over the course of time; as a rule, the severity increases and conditions may possibly merge into each other or other conditions may appear in addition to those which already exist.

The compounds according to the invention can be used to treat a large number of signs, symptoms and/or malfunctions which are connected with the disorders of the central nervous system and, in particular, the abovementioned conditions. These signs, symptoms and/or malfunctions include, for example, a disturbed relationship to reality, lack of insight and ability to meet customary social norms or the demands made by life, changes in temperament, changes in individual drives, such as hunger, sleep, thirst, etc., and in mood, disturbances in the ability to observe and combine, changes in personality, in particular emotional liability, hallucinations, ego-disturbances, distractedness, ambivalence, autism, depersonalization and false perceptions, delusional ideas, chanting speech, lack of synkinesia, short-step gait, flexed posture of trunk and limbs, tremor, poverty of facial expression, monotonous speech, depressions, apathy, impeded spontaneity and decisiveness, impoverished association ability, anxiety, nervous agitation, stammering, social phobia, panic disturbances, withdrawal symptoms in association with dependency, maniform syndromes, states of excitation and confusion, dysphoria, dyskinetic syndromes and tic disorders, e.g. Huntington's chorea and Gilles-de-la-Tourette's syndrome, vertigo syndromes, e.g. peripheral positional, rotational and oscillatory vertigo, melancholia, hysteria, hypochondria and the like.

Within the meaning of the invention, a treatment also includes a preventive treatment (prophylaxis), in particular as relapse prophylaxis or phase prophylaxis, as well as the treatment of acute or chronic signs, symptoms and/or malfunctions. The treatment can be orientated symptomatically, for example as the suppression of symptoms. It can be effected over a short period, be orientated over the medium term or can be a long-term treatment, for example within the context of a maintenance therapy.

Therefore the compounds according to the invention are preferentially suitable for treating diseases of the central nervous system, in particular for treating affective disorders; neurotic disturbances, stress disturbances and somatoform disturbances and psychoses, and, in particular, for treating schizophrenia and depression. Because of their high selectivity with regard to the D₃ receptor, the compounds I according to the invention are also suitable for treating disturbances of kidney function, in particular disturbances of kidney function which are caused by diabetes mellitus (see WO 00/67847) and, especially, diabetic nephropathy.

Within the context of the treatment, the use according to the invention of the described compounds involves a method. In this method, an effective quantity of one or more compounds, as a rule formulated in accordance with pharmaceutical and veterinary practice, is administered to the individual to be treated, preferably a mammal, in particular a human being, productive animal or domestic animal. Whether such a treatment is indicated, and in which form it is to take place, depends on the individual case and is subject to medical assessment (diagnosis) which takes into consideration signs, symptoms and/or malfunctions which are present, the risks of developing particular signs, symptoms and/or malfunctions, and other factors.

As a rule, the treatment is effected by means of single or repeated daily administration, where appropriate together, or alternating, with other active compounds or active compound-containing preparations such that a daily dose of preferably from about 0.1 to 1000 mg/kg of bodyweight, in the case of oral administration, or of from about 0.1 to 100 mg/kg of bodyweight, in the case of parenteral administration, is supplied to an individual to be treated.

The invention also relates to the production of pharmaceutical compositions for treating an individual, preferably a mammal, in particular a human being, productive animal or domestic animal. Thus, the ligands are customarily administered in the form of pharmaceutical compositions which comprise a pharmaceutically acceptable excipient together with at least one compound according to the invention and, where appropriate, other active compounds. These compositions can, for example, be administered orally, rectally, transdermally, subcutaneously, intravenously, intramuscularly or intranasally.

Examples of suitable pharmaceutical formulations are solid medicinal forms, such as powders, granules, tablets, in particular film tablets, lozenges, sachets, cachets, sugar-coated tablets, capsules, such as hard gelatin capsules and soft gelatin capsules, suppositories or vaginal medicinal forms, semisolid medicinal forms, such as ointments, creams, hydrogels, pastes or plasters, and also liquid medicinal forms, such as solutions, emulsions, in particular oil-in-water emulsions, suspensions, for example lotions, injection preparations and infusion preparations, and eyedrops and eardrops. Implanted release devices can also be used for administering inhibitors according to the invention. In addition, it is also possible to use liposomes or microspheres.

When producing the compositions, the compounds according to the invention are optionally mixed or diluted with one or more excipients. Excipients can be solid, semisolid or liquid materials which serve as vehicles, carriers or medium for the active compound.

Suitable excipients are listed in the specialist medicinal monographs. In addition, the formulations can comprise pharmaceutically acceptable carriers or customary auxiliary substances, such as glidants; wetting agents; emulsifying and suspending agents; preservatives; antioxidants; antiirritants; chelating agents; coating auxiliaries; emulsion stabilizers; film formers; gel formers; odor masking agents; taste corrigents; resin; hydrocolloids; solvents; solubilizers; neutralizing agents; diffusion accelerators; pigments; quaternary ammonium compounds; refatting and overfatting agents; raw materials for ointments, creams or oils; silicone derivatives; spreading auxiliaries; stabilizers; sterilants; suppository bases; tablet auxiliaries, such as binders, fillers, glidants, disintegrants or coatings; propellants; drying agents; opacifiers; thickeners; waxes; plasticizers and white mineral oils. A formulation in this regard is based on specialist knowledge as described, for example, in Fiedler, H. P., Lexikon der Hilfsstoffe für Pharmazie, Kosmetik und angrenzende Gebiete [Encyclopedia of auxiliary substances for pharmacy, cosmetics and related fields], 4^(th) edition, Aulendorf: ECV-Editio-Kantor-Verlag, 1996.

The following examples serve to explain the invention without limiting it.

The compounds were either characterized via proton-NMR in d₆-dimethylsulfoxide or d-chloroform, if not stated otherwise, on a 400 MHz or 500 MHz NMR instrument (Bruker AVANCE), or by mass spectrometry, generally recorded via HPLC-MS in a fast gradient on C18-material (electrospray-ionisation (ESI) mode), or melting point.

The magnetic nuclear resonance spectral properties (NMR) refer to the chemical shifts (δ) expressed in parts per million (ppm). The relative area of the shifts in the ¹H NMR spectrum corresponds to the number of hydrogen atoms for a particular functional type in the molecule. The nature of the shift, as regards multiplicity, is indicated as singlet (s), broad singlet (s. br.), doublet (d), broad doublet (d br.), triplet (t), broad triplet (t br.), quartet (q), quintet (quint.) and multiplet (m).

PREPARATION EXAMPLES I. Preparation of the Intermediates

a. Preparation of Sulfonyl Chlorides

a. 1 4-((S)-2-Fluoro-1-methyl-ethyl)-benzenesulfonyl chloride

a. 1.1 Toluene-4-sulfonic acid (S)-2-phenyl-propyl ester

To a solution of 20 g of (S)-(−)-2-phenyl-1-propanol in 240 ml of dichloromethane was added in portions 28 g of p-toluenesulfonyl chloride (146.8 mmol). After stirring for 18 h at room temperature, the organic phase was washed with 100 ml of water, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield 43 g of the title compound.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.65 (d, 2H), 7.15-7.3 (m, 5H), 7.1 (d, 2H), 4.0-4.1 (m, 2H), 3.1 (m, 1H), 2.4 (s, 3H), 1.3 (d, 3H).

a.1.2 ((S)-2-Fluoro-1-methyl-ethyl)-benzene

9.62 g of toluene-4-sulfonic acid (S)-2-phenyl-propyl ester (33.13 mmol) were dissolved in 80 ml of polyethyleneglycol 400. 9.62 g of potassium fluoride (165.6 mmol) were added and the reaction mixture was stirred at 50° C. for 3 days and another 2 days at 55-70° C. The reaction was treated with 150 ml of saturated aqueous sodium chloride solution, extracted three times with diethyl ether, and the combined organic layers were dried over magnesium sulfate, filtered, and the solvent was evaporated under reduced pressure. The crude product was purified via silica gel chromatography using cyclohexyane/ethyl acetate 15% as eluent. 2.85 g of the desired product were isolated, containing ˜25% of the elimination side product.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.2-7.4 (m, 5H), 4.3-4.6 (several m, 2H), 3.15 (m, 1H), 1.3 (m, 3H).

a.1.3 4-((S)-2-Fluoro-1-methyl-ethyl)-benzenesulfonyl chloride

3.5 g of ((S)-2-fluoro-1-methyl-ethyl)-benzene (25.32 mmol) were dissolved in 80 ml of dichloromethane. At 0-5° C., 11.81 g of chlorosulfonic acid (101.31 mmol), dissolved in 20 ml of dichloromethane, were added dropwise. The reaction mixture was stirred for 30 min at room temperature and 2 h at 30° C. The solvent was evaporated. 150 ml of diethyl ether were added to the residue, washed once with 150 ml of water, and the organic layer was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure. The crude product was purified via silica gel chromatography with n-heptane-dichloromethane (6:4) as eluent to give 1.5 g of the title compound.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (d, 2H), 7.5 (d, 2H), 4.5 (dd, 2H), 3.25 (m, 1H), 1.4 (d, 3H).

a.2 4-((R)-2-Fluoro-1-methyl-ethyl)-benzenesulfonyl chloride

a.2.1 Toluene-4-sulfonic acid (R)-2-phenyl-propyl ester

Following the procedure analogous to that used for the synthesis of toluene-4-sulfonic acid (S)-2-phenyl-propyl ester, but using (R)-2-phenyl-1-propanol, the title compound was prepared

a.2.2 ((R)-2-Fluoro-1-methyl-ethyl)-benzene

The title compound was prepared as described above for the synthesis of ((S)-2-fluoro-1-methyl-ethyl)-benzene, but using toluene-4-sulfonic acid (R)-2-phenyl-propyl ester instead of toluene-4-sulfonic acid (S)-2-phenyl-propyl ester.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.2-7.4 (m, 5H), 4.3-4.6 (several m, 2H), 3.15 (m, 1H), 1.3 (m, 3H).

a.2.3 4-((R)-2-Fluoro-1-methyl-ethyl)-benzenesulfonyl chloride

1.3 g of ((R)-2-fluoro-1-methyl-ethyl)-benzene (9.4 mmol) were dissolved in 50 ml of dichloromethane. At 0-5° C., 1.1 g of chlorosulfonic acid (9.4 mmol), dissolved in 10 ml of dichloromethane, were added dropwise. The reaction mixture was stirred for 20 min at 0-5° C. and then added to a solution of 2.15 g of phosphorous pentachloride dissolved in 40 ml of dichloromethane. The reaction mixture was stirred for 30 min at 0-5° C. and 1 h at room temperature. The solvent was evaporated, 100 ml of diethyl ether were added, the mixture was washed once with 150 ml of water, and the organic layer dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure. The crude product was purified via silica gel chromatography with n-heptane-dichloromethane (1:1) as eluent to give 0.261 g of the title compound.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (d, 2H), 7.5 (d, 2H), 4.5 (dd, 2H), 3.25 (m, 1H), 1.4 (d, 3H).

a.3 4-(2-Fluoro-1-methyl-ethyl)-benzenesulfonyl chloride

Following the procedures analogous to that used for the preparation of 4-((S)-2-fluoro-1-methyl-ethyl)-benzenesulfonyl chloride, but starting with 2-phenyl-1-propanol in step a.3.1, the title compound was prepared.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (d, 2H), 7.5 (d, 2H), 4.5 (dd, 2H), 3.25 (m, 1H), 1.4 (d, 3H).

a.4 4-(2-Fluoro-1-fluoromethyl-ethyl)-benzenesulfonyl chloride

a.4.1 (2-Fluoro-1-fluoromethyl-ethyl)-benzene

4 g of 3-phenylglutaric acid (19.21 mmol) were suspended in 350 ml of dichloromethane. At room temperature, 6.5 g of xenon difluoride (38.42 mmol) were added and the reaction mixture was stirred at room temperature for 18 h. The organic phase was washed once with 975 ml of 6% aqueous sodium hydrogencarbonate, dried over magnesium sulfate, filtered, and the solvent evaporated. The remaining residue was distilled at a bath temperature of 123° C. at 21 mm to yield 0.78 g of the title compound that contained ˜50% of 4-(2-Fluoro-1-methyl-ethyl)benzene.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.2-7.4 (m, 5H), 4.6-4.8 (dd, 4H), 3.3 (m, 1H).

a.4.2 4-(2-Fluoro-1-fluoromethyl-ethyl)-benzenesulfonyl chloride

Following the procedures analogous to that used for the preparation of 4-((S)-2-fluoro-1-methyl-ethyl)-benzenesulfonyl chloride, but using 5 equivalents of chlorosulfonic acid, 0.12 g of the title compound were obtained.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.05 (d, 2H), 7.55 (d, 2H), 4.75 (dd, 4H), 3.4 (m, 1H).

a.5 4-(3,3,3-Trifluoropropyl)-benzenesulfonyl chloride

2.9 g were obtained from commercially available (3,3,3-trifluoropropyl)-benzene following the procedure used for the synthesis of 4-((S)-2-fluoro-1-methyl-ethyl)benzenesulfonyl chloride described above.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (d, 2H), 7.45 (d, 2H), 3.0 (t, 2H), 2.45 (m, 2H).

a.6 4-(2,2,2-Trifluoroethyl)-benzenesulfonyl chloride

The product was obtained from commercially available (2,2,2-trifluoroethyl)benzene following the procedure as described in J. Org. Chem., 1960, 25, 1824-26.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.05 (d, 2H), 7.55 (d, 2H), 3.5 (q, 2H).

a.7 4-(3-Fluoropropyl)-benzenesulfonyl chloride

a.7.1 (3-Fluoropropyl)-benzene

15.6 g of diethylaminosulfurtrifluoride (DAST, 96.91 mmol) were dissolved in 18 ml of dichloromethane. At 0-5° C., 12 g of 3-phenyl-1-propanol (88.1 mmol) dissolved in 30 ml of dichloromethane, were added dropwise. The reaction mixture was stirred for 18 h, and, after addition of 30 ml of dichloromethane, poured onto 100 ml of ice water. The organic layer was separated, dried over magnesium sulfate, filtered, and the solvent evaporated. The crude product was purified by distillation at a bath temperature of 106° C. at 20 mm to yield 7.4 g of the title compound.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.1-7.3 (m, 5H), 4.4 (dt, 2H), 2.7 (m, 2H), 2.0 (m, 2H).

a.7.2 4-(3-Fluoropropyl)-benzenesulfonyl chloride

4.1 g of (3-fluoro-propyl)-benzene (29.67 mmol) were dissolved in 40 ml of dichloromethane. At 0-5° C., 6.91 g of chlorosulfonic acid (59.34 mmol), dissolved in 10 ml of dichloromethane, were added dropwise. The reaction mixture was stirred for 45 min at 0-5° C. and then added to a solution of 6.8 g of phosphorous pentachloride (32.63 mmol) dissolved in 50 ml of dichloromethane. The reaction mixture was stirred for 1 h at 5-10° C. The solvent was evaporated, 150 ml of diethyl ether added, washed once with 150 ml of ice water, and the organic layer dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure. The crude product was purified via silica gel chromatography with n-heptane-dichloromethane (11:9) as eluent to give 5.5 g of the title compound.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.95 (d, 2H), 7.45 (d, 2H), 4.5 (dt, 2H), 2.9 (t, 2H), 2.05 (m, 2H).

a.8 4-(2,2-Difluoro-cyclopropyl)-benzenesulfonyl chloride

2.07 g of were obtained from commercially available (2,2-difluorocyclopropyl)benzene following the procedure used for the synthesis of (3-fluoropropyl)benzenesulfonyl chloride with the exception that only 1.1 equivalents of phosphorous pentachloride were used.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (d, 2H), 7.45 (d, 2H), 2.85 (m, 1H), 2.0 (m, 1H), 1.75 (m, 1H).

a.9 3-Bromo-4-trifluoromethoxy-benzenesulfonyl chloride

2.0 g of 1-bromo-2-(trifluoro-methoxy)benzene (8.3 mmol) were dissolved in 30 ml of dichloromethane. At 0-5° C., 1.06 g of chlorosulfonic acid (9.13 mmol), dissolved in 3 ml of dichloromethane, were added dropwise. The reaction mixture was stirred for 30 min at room temperature. Additional 5.5 equivalents of chlorosulfonic in dichloromethane were added to drive the reaction to completion. Standard work-up was followed and silica gel chromatography with n-heptane-dichloromethane (6:4) as eluent gave 2.19 g of the title compound.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.3 (d, 1H), 8.05 (dd, 1H), 7.5 (dd, 1H).

a.10 4-(2-Fluoroethyl)-benzenesulfonyl chloride

a.10.1 (2-Fluoroethyl)-benzene

6.8 g of the title compound were obtained from commercially available 2-phenylethanol following the procedure used for the synthesis of (3-fluoropropyl)benzene.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.1-7.3 (m, 5H), 4.6 (m, 1H), 4.45 (m, 1H), 2.95 (m, 1H), 2.9 (m, 1H).

a.10.2 4-(2-Fluoroethyl)-benzenesulfonyl chloride

3.55 g were obtained following the procedure used for the synthesis of 4-((R)-2-fluoro-1-methyl-ethyl)-benzenesulfonyl chloride.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (d, 2H), 7.5 (d, 2H), 4.7 (dt, 2H), 3.05-3.2 (dt, 2H).

a.11 5-Propylthiophene-2-sulfonyl chloride

Following the procedures analogous to that used for the preparation of (3-fluoropropyl)-benzenesulfonyl chloride, but using only 1 equivalent of phosphorous pentachloride, the title compound was prepared.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 1H), 6.85 (d, 1H), 2.9 (t, 2H), 1.75 (m, 2H), 1.0 (t, 3H).

a.12 4-(1-Methyl-1H-pyrazol-4-yl)-benzenesulfonyl chloride

a.12.1 1-Methyl-4-phenyl-1H-pyrazole

1 g of 2-phenylmalonaldehyde (6.75 mmol) were dissolved in 25 ml of ethanol. 0.36 ml of N-methyl-hydrazine (6.75 mmol) were added, the reaction mixture was stirred under reflux for 4 h, the solvent evaporated under reduced pressure to yield 1.09 g of the product.

ESI-MS: 159.1 [M+H]+

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (s, 1H), 7.6 (s, 1H), 7.45 (d, 2H), 7.35 (t, 2H), 7.2 (t, 1H), 3.9 (s, 3H).

a.12.2 4-(1-Methyl-1H-pyrazol-4-yl)-benzenesulfonyl chloride

0.5 g of 1-methyl-4-phenyl-1H-pyrazole (3.16 mmol) were dissolved in 20 ml of dichloromethane. At 0° C., 0.232 ml of chlorosulfonic acid were added and the reaction mixture was stirred for 1 h under ice cooling. Additional 0.7 ml of chlorosulfonic acid were added, the mixture was stirred at 0° C. for 30 minutes and then 90 minutes at 50° C. The two phases were separated and the lower layer put on ice, extracted twice with diethyl ether, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield 0.496 g of the product.

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (d, 2H), 7.85 (s, 1H), 7.75 (s, 1H), 7.65 (d, 2H), 4.0 (s, 3H).

a.13 4-(1,1,1-Trifluoropropan-2-yl)benzenesulfonyl chloride and 2-(1,1,1-trifluoropropan-2-yl)benzenesulfonyl chloride

Prepared on a 14 g scale following the procedure outlined in Scheme 7. 2-(1,1,1-Trifluoropropan-2-yl)benzenesulfonyl chloride is a by-product of the reaction.

-   4-(1,1,1-Trifluoropropan-2-yl)benzenesulfonyl chloride:

MS (ESI) m/z: 273.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 7.62 (d, 2H), 7.33 (d, 2H), 3.81 (m, 1H), 1.42 (d, 3H).

-   2-(1,1,1-Trifluoropropan-2-yl)benzenesulfonyl chloride:

MS (ESI) m/z: 273.1 [M+H]⁺

a.14 4-(1,1-Difluoropropan-2-yl)benzenesulfonyl chloride and 2-(1,1-Difluoropropan-2-yl)benzene-1-sulfonyl chloride

Prepared on an 11 g scale following the procedure outlined in Scheme 6. 2-(1,1-Difluoropropan-2-yl)benzene-1-sulfonyl chloride is a by-product of the reaction.

-   4-(1,1-Difluoropropan-2-yl)benzenesulfonyl chloride:

MS (ESI) m/z: 255.0 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 8.03 (d, 2H), 7.55 (d, 2H), 5.88 (dt, 1H), 3.34 (m, 1H), 1.47 (d, 3H).

¹³C-NMR (DMSO-d₆): δ [ppm] 146.43, 143.54, 129.77, 127.28, 117.06 (t), 43.76, 13.78.

-   2-(1,1-difluoropropan-2-yl)benzene-1-sulfonyl chloride:

Isolated by chromatography on 110 mg scale.

MS (ESI) m/z: 255.0 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 8.15 (d, 1H), 7.77 (t, 1H), 7.70 (d, 1H), 7.54 (t, 1H), 5.99 (dt, 1H), 4.43 (m, 1H), 1.51 (d, 3H).

¹³C-NMR (DMSO-d₆): δ [ppm] 143.45, 138.63, 135.53, 130.93, 129.04, 128.17, 116.61 (t), 38.38, 13.68.

b. Preparation of toluene-4-sulfonic acid 3-fluoro-propyl ester

5 g of 3-fluoro-propanol (64.03 mmol) and 18 ml of triethylamine (129.32 mmol) were dissolved in 50 ml of dichloromethane. At 0-5° C., 12.9 g toluene-4-sulfonylchloride (67.66 mmol) were added and the reaction mixture stirred at room temperature for 18 h. Standard work-up yielded 13.7 g of toluene-4-sulfonic acid 3-fluoro-propyl ester.

ESI-MS: 233.1 [M+H]⁺

II. Preparation of the Compounds I Example 1 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

1.1 (S)-2-Phenyl-succinic acid dimethyl ester

5 g of (S)-2-phenyl succinic acid (25.75 mmol) were dissolved in 50 ml of methanol. At 4° C., 4.7 ml of thionyl chloride (64.37 mmol) were added dropwise. The reaction mixture was stirred at room temperature for 2 h, the solvents were evaporated under reduced pressure. The residue that remained was dissolved in diethyl ether, washed once with saturated aqueous NaHCO₃ solution, reextracted with diethyl ether, and the combined organic layers dried over magnesium sulfate, filtered, and evaporated to dryness to yield 5.8 g of the desired product.

ESI-MS: 223.1 [M+H]⁺

1.2 (S)-2-Phenyl-butane-1,4-diol

2.54 g of lithium aluminium hydride (66.95 mmol) were suspended under ice cooling in 25 ml of tetrahydrofuran. 5.8 g of (S)-2-phenyl succinic acid dimethyl ester (25.75 mmol) dissolved in 25 ml of tetrahydrofuran were added slowly at 5-10° C. Stirring was continued for 15 minutes and then 15 ml of tetrahydrofuran/water (1:1) were added dropwise. The suspension was adjusted to pH 3-4 with conc. hydrochloric acid, filtered and the filter washed with dichloromethane. The filtrate was evaporated to dryness, taken up in diethylether, washed with saturated sodium hydrogen carbonate solution, reextracted with diethylether, and the combined organic layers dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield 4.2 g of the diol.

ESI-MS: 189.1 [M+Na]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.25-7.4 (m, 2H), 7.15-7.3 (m, 3H), 4.2-4.35 (m, 2H), 3.2 (m, 1H), 3.1 (m, 1H), 2.1-2.3 (m, 3H).

1.3 Methanesulfonic acid (S)-4-methanesulfonyloxy-3-phenyl-butyl ester

4.19 g of (S)-2-phenyl-butane-1,4-diol (25.21 mmol) were dissolved in 50 ml of dichloromethane. 10.53 ml of triethylamine (75.6 mmol) were added, and, under ice cooling, 5 ml of methansulfonyl chloride (64.34 mmol). Stirring was continued for 15 minutes and then 40 ml of water were added. The organic phase was separated, and the aqueous phase extracted with dichloromethane. The combined organic layers were dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield 8.37 g of the product.

1.4 (S)-3-phenyl-1-propyl-pyrrolidine

2.0 g of methanesulfonic acid (S)-4-methanesulfonyloxy-3-phenyl-butyl ester (5.51 mmol) were dissolved in 5 ml of n-propylamine (60.82 mmol). The reaction mixture was stirred for 15 h at room temperature, diethyl ether added, the organic phase washed twice with water. The aqueous phase was reextracted once with diethylether, the organic layers combined, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield 1.09 g of the product.

ESI-MS: 190.1 [M+H]⁺

1.5 (S)-3-(4-Nitro-phenyl)-1-propyl-pyrrolidine

0.3 g of (S)-3-phenyl-1-propyl-pyrrolidine (1.48 mmol) was dissolved in 2 ml of conc. sulphuric acid under argon and ice cooling. 165.16 mg of potassium nitrate (1.63 mmol) were added in small portions. The reaction mixture was stirred for 15 minutes under ice cooling, for 15 h at room temperature, and poured onto crushed ice. The aqueous solution was made alkaline with 25% sodium hydroxide, extracted three times with diethyl ether, the aqueous phase reextracted once with diethylether, the organic layers combined, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield 0.326 g of a brownish oil. A second reaction yielded another 0.919 g of the desired product.

ESI-MS: 235.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 8.15 (d, 2H), 7.45 (d, 2H), 3.4-3.5 (m, 1H), 2.9-3.0 (m, 1H), 2.75 (m, 1H), 2.3-2.6 (m, 4H), 1.8-1.9 (m, 1H), 1.5-1.65 (m, 3H), 0.95 (m, 3H).

1.6 (S)-3-(4-Amino-phenyl)-1-propyl-pyrrolidine

0.907 g of (S)-3-(4-nitro-phenyl)-1-propyl-pyrrolidine (3.59 mmol) were dissolved in 20 ml of methanol, 7.0 g of tin dichloride (31.02 mmol) added, and the reaction mixture stirred under reflux for 1 h. The methanol was evaporated, 60 ml of 1 N sodium hydroxide and dichloromethane added, and the phases separated after extensive stirring. The aqueous phase was extracted twice with dichloromethane, the organic layers combined, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield 0.744 g of the crude amino compound.

ESI-MS: 205.2 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 6.9 (d, 2H), 6.45 (d, 2H), 4.7 (s, broad, 2H), 3.1 (m, 1H), 2.85 (m, 1H), 2.65 (m, 1H), 2.55 (m, 1H), 2.25-2.45 (m, 3H), 2.1 (m, 1H), 1.65 (m, 1H), 1.4-1.5 (m, 2H), 0.85 (m, 3H).

1.7 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.4 g of (S)-3-(4-amino-phenyl)-1-propyl-pyrrolidine (1.96 mmol) and 0.407 mg of 4-isopropyl-phenylsulfonyl chloride (1.86 mmol) were dissolved in 15 ml of tetrahydrofuran. 0.82 ml of triethylamine (5.87 mmol) were added and the reaction mixture stirred for 15 h at room temperature. The solvents were evaporated under reduced pressure, the residue treated with water and adjusted to an alkaline pH with sodium hydroxide solution. The aqueous layer was extracted three times with diethyl ether, the organic layers combined, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure. The crude product was purified with silica gel chromatography with ethyl acetate/methanol (2.5-3%) as eluent, yielding 0.225 g of the purified product. This material was dissolved in 15 ml of diethyl ether and 1 ml of dichloromethane, 0.61 ml of 1 N HCl in diethyl ether added, and after formation of a precipitate, the suspension evaporated under reduced pressure to yield 0.235 g of a white precipitate.

ESI-MS: 387.2 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.3 and 11.1 (2 s, broad, 1H), 10.35 (m, 1H), 7.7 (d, 2H), 7.4 (d, 2H), 7.15-7.3 (m, 2H), 7.1 (m, 2H), 3.2-3.8 (several m, 4H), 2.85-3.15 (several m, 4H), 2.3 (m, 1H), 1.8-2.0 (m, 1H), 1.6-1.75 (m, 2H), 1.15 (d, 6H), 0.9 (m, 3H).

Example 2 4-(1,1-Dimethyl-propyl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.219 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-(1,1-dimethylpropyl)benzenesulfonylchloride.

ESI-MS: 415.5 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.3 and 11.1 (2 s, broad, 1H), 10.3 (m, 1H), 7.7 (d, 2H), 7.5 (d, 2H), 7.1-7.3 (m, 2H), 7.1 (m, 2H), 3.15-3.8 (several m, 4H), 2.85-3.15 (several m, 3H), 2.3 (m, 1H), 1.8-2.0 (m, 1H), 1.5-1.75 (several m, 4H), 1.2 (s, 6H), 0.9 (m, 3H), 0.55 (m, 3H).

Example 3 4-(Isopropyl)-N-[4-((S)-1-allyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

3.1 (S)-1-Allyl-3-phenyl-pyrrolidine

1.3 g of the desired product were obtained following the same synthetic procedure as described for (S)-3-phenyl-1-propyl-pyrrolidine, using allylamine.

ESI-MS: 188.2 [M+H]⁺

3.2 (S)-1-Allyl-3-(4-nitro-phenyl)-pyrrolidine

1.27 g of the desired product were obtained following the same synthetic procedure as described for (S)-3-(4-nitro-phenyl)-1-propyl-pyrrolidine.

ESI-MS: 233.3 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 8.15 (d, 2H), 7.4 (d, 2H), 5.85-6.0 (m, 1H), 5.2 (m, 1H), 5.1 (m, 1H), 3.4-3.5 (m, 1H), 3.05-3.2 (m, 2H), 3.0 (m, 1H), 2.75 (m, 2H), 2.6 (m, 1H), 2.3-2.4 (m, 1H), 1.8-1.9 (m, 1H).

3.3 (S)-1-Allyl-3-(4-amino-phenyl)-pyrrolidine

1.01 g of the desired product were obtained following the same synthetic procedure as described for (S)-3-(4-nitro-phenyl)-1-propyl-pyrrolidine.

ESI-MS: 203.1 [M+H]⁺

3.4 4-(Isopropyl)-N-[4-((S)-1-allyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.184 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride.

ESI-MS: 385.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.8 and 11.5 (2 s, broad, 1H), 10.45 (m, 1H), 7.7 (d, 2H), 7.4 (d, 2H), 7.2-7.3 (m, 2H), 7.1 (m, 2H), 6.0 (m, 1H), 5.4-5.55 (m, 2H), 3.8 m (2H), 3.3-3.7 (several m, 3H), 3.2 (m, 1H), 2.9-3.1 (several m, 2H), 2.3 (m, 1H), 1.85-2.05 (m, 1H), 1.15 (s, 6H).

Example 4 4-(Isopropyl)-N-[4-((R)-1-allyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

4.1 (R)-1-Allyl-3-(4-nitro-phenyl)-pyrrolidine

2.1 g of the desired product were obtained following the same synthetic procedure as described for (S)-3-(4-nitro-phenyl)-1-propyl-pyrrolidine.

ESI-MS: 233.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 8.15 (d, 2H), 7.4 (d, 2H), 5.85-6.0 (m, 1H), 5.2 (m, 1H), 5.1 (m, 1H), 3.4-3.5 (m, 1H), 3.05-3.2 (m, 2H), 3.0 (m, 1H), 2.75 (m, 2H), 2.6 (m, 1H), 2.3-2.4 (m, 1H), 1.8-1.9 (m, 1H).

4.2 (R)-1-Allyl-3-(4-amino-phenyl)-pyrrolidine

1.12 g of the desired product were obtained following the same synthetic procedure as described for (S)-1-allyl-3-(4-amino-phenyl)-1-propyl-pyrrolidine.

ESI-MS: 203.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm]

4.3 4-(Isopropyl)-N-[4-((R)-1-allyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.138 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride.

ESI-MS: 385.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.65 and 11.45 (2 s, broad, 1H), 10.35 (m, 1H), 7.7 (d, 2H), 7.4 (d, 2H), 7.2-7.3 (m, 2H), 7.1 (m, 2H), 6.0 (m, 1H), 5.4-5.55 (m, 2H), 3.8 m (2H), 3.3-3.7 (several m, 3H), 3.2 (m, 1H), 2.9-3.1 (several m, 2H), 2.3 (m, 1H), 1.85-2.05 (m, 1H), 1.15 (s, 6H).

Example 5 4-(Isopropyl)-N-[4-((R)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.525 g of 4-(isopropyl)-N-[4-((R)-1-allyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (1.37 mmol) were dissolved in 15 ml ethanol, 0.075 g Pd/C (10%) added, warmed to 80° C. and 0.861 g ammonium formate (13.65 mmol) dissolved in 7.5 ml of water, added. After stirring for 15 h at room temperature, the catalyst was filtered off, washed with water and dichloromethane. The aqueous phase was adjusted to pH 9 with 1 N aq. sodium hydroxide, extracted twice with dichloromethane, and the combined organic layers washed with saturated sodium chloride solution, dried over magnesium sulfate, filtered, and the solvent evaporated to dryness to yield 0.55 g of a mixture of the N-propyl- and N-dealkylated products. This mixture was dissolved in 25 ml of dichloromethane, 0.116 ml of propionic aldehyde (1.6 mmol), 0.14 ml acetic acid (2.39 mmol) and 0.508 g sodium triacetoxyborohydride (2.39 mmol) added. After stirring for 1 h at room temperature, the mixture was evaporated to dryness, water added and the pH adjusted to pH 9 with 1 N aq. sodium hydroxide. The aqueous layer was extracted three times with diethyl ether, the organic layers combined, dried over magnesium sulfate, filtered, and evaporated to dryness. The crude product was purified via silica gel chromatography with ethyl acetate/methanol (17.5%). Fractions containing the product were combined, evaporated under reduced pressure, and the residue partitioned between alkaline (pH 9-10) aqueous and diethyl ether, followed by a second extraction with ethyl ether and one with ethyl acetate. The combined organic layers were dried over magnesium sulfate, filtered, and evaporated to dryness to yield 0.21 g of the purified product. The material was dissolved in 10 ml of diethyl ether, and 0.285 ml of 2 N HCl in diethyl ether added. The forming suspension was evaporated to dryness under reduced pressure to yield 0.201 g of the product as hydrochloride.

ESI-MS: 387.2 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.4 and 11.3 (2 s, broad, 1H), 10.35 (m, 1H), 7.7 (d, 2H), 7.4 (d, 2H), 7.15-7.3 (m, 2H), 7.1 (m, 2H), 3.2-3.8 (several m, 4H), 2.85-3.15 (several m, 4H), 2.3 (m, 1H), 1.8-2.0 (m, 1H), 1.6-1.75 (m, 2H), 1.15 (d, 6H), 0.9 (m, 3H).

Example 6 4-Ethyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.096 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-ethyl-benzenesulfonylchloride.

ESI-MS: 373.3 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.35 and 11.15 (2 s, broad, 1H), 10.3 (m, 1H), 7.7 (d, 2H), 7.4 (d, 2H), 7.15-7.3 (m, 2H), 7.05 (m, 2H), 2.9-3.8 (several m, 7H), 2.6-2.7 (m, 2H), 2.3 (m, 1H), 1.8-2.0 (m, 1H), 1.6-1.75 (m, 2H), 1.2 (m, 3H), 0.9 (m, 3H).

Example 7 4-Trifluoromethoxy-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.067 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-trifluoromethoxy-benzenesulfonylchloride.

ESI-MS: 429.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.25 and 11.05 (2 s, broad, 1H), 10.65 (m, 1H), 8.0 (m, broad, 4H), 7.2-7.35 (m, 2H), 7.1 (m, 2H), 2.9-3.8 (several m, 7H), 2.3 (m, 1H), 1.8-2.05 (m, 1H), 1.6-1.75 (m, 2H), 0.9 (m, 3H).

Example 8 4-Trifluoromethyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.12 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-trifluoromethyl-benzenesulfonylchloride.

ESI-MS: 413.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.3 and 11.1 (2 s, broad, 1H), 10.55 (m, 1H), 7.9 (d, 2H), 7.55 (d, 2H), 7.2-7.35 (m, 2H), 7.1 (m, 2H), 2.9-3.8 (several m, 7H), 2.3 (m, 1H), 1.8-2.05 (m, 1H), 1.6-1.75 (m, 2H), 0.9 (m, 3H).

Example 9 4-Difluoromethoxy-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.125 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-difluoromethoxy-benzenesulfonylchloride.

ESI-MS: 411.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.8 (d, 2H), 7.0-7.2 (m, 6H), 7.1 (m, 2H), 6.55 (t, 1H), 3.25 (m, 1H), 3.0 (m, 1H), 2.85 (m, 1H), 2.65 (m, 1H), 2.4-2.55 (m, 3H), 2.25 (m, 1H), 1.8 (m, 1H), 1.5 (m, 2H), 0.9 (t, 3H).

Example 10 4-Methyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.31 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-methyl-benzenesulfonylchloride.

ESI-MS: 359.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.7 (m, 1H), 7.2 (m, 1H), 7.05 (m, 1H), 3.3 (m, 1H), 3.0 (m, 1H), 2.85 (m, 1H), 2.65 (m, 1H), 2.2-2.6 (several m, 4H), 2.35 (s, 3H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (m, 3H).

Example 11 6-Chloro-pyridine-3-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

0.163 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 6-chloro-pyridine-sulfonylchloride.

ESI-MS: 380.1 [M+H]⁺

Example 12 4-Methoxy-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.154 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-methoxy-benzenesulfonylchloride.

ESI-MS: 375.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.7 (m, 1H), 7.05 (m, 1H), 6.85 (m, 1H), 3.8 (s, 3H), 3.3 (m, 1H), 3.1 (m, 1H), 2.9 (m, 1H), 2.7 (m, 1H), 2.4-2.6 (several m, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (m, 3H).

Example 13 4-Chloro-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.175 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-chloro-benzenesulfonylchloride.

ESI-MS: 379.05 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.7 (d, 2H), 7.35 (d, 2H), 7.0-7.2 (m, 4H), 7.1 (m, 2H), 3.3 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.65 (m, 1H), 2.4-2.55 (m, 3H), 2.25 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (m, 3H).

Example 14 2,3-Dihydro-benzofuran-5-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

0.207 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 2,3-Dihydro-benzofuran-5-sulfonylchloride.

ESI-MS: 387.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.5-7.6 (m, 2H), 7.15 (m, 2H), 6.95 (m, 2H), 6.7 (m, 1H), 4.65 (m, 2H), 3.35 (m, 1H), 3.2 (m, 2H), 3.0 (m, 1H), 2.8 (m, 1H), 2.6 (m, 1H), 2.3-2.5 (m, 3H), 2.2-2.3 (m, 1H), 1.8 (m, 1H), 1.5 (m, 2H), 0.9 (m, 3H).

Example 15 4-Bromo-3-fluoro-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.289 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-bromo-3-fluorobenzene-sulfonylchloride.

ESI-MS: 441.0/443.0 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.65 (m, 1H), 7.5 (m, 1H), 7.4 (m, 1H), 7.15 (d, 2H), 7.0 (d, 2H), 3.3 (m, 1H), 3.0 (m, 1H), 2.8 (m, 1H), 2.65 (m, 1H), 2.35-2.5 (m, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.5 (m, 2H), 0.9 (m, 3H).

Example 16 4-Bromo-3-fluoro-N-[2-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.02 g of the ortho product could be separated during purification of the major para product.

ESI-MS: 441.0/443.0 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.5-7.7 (m, 3H), 7.1-7.2 (m, 3H), 7.0 (m, 1H), 3.5 (m, 1H), 3.3 (m, 1H), 3.1-3.2 (m, 2H), 2.7-2.9 (m, 3H), 2.3-2.4 (m, 1H), 1.9-2.1 (m, 2H), 1.6-1.8 (m, 2H), 0.9 (m, 3H).

Example 17 4-Bromo-2-fluoro-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.387 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-bromo-2-fluorobenzene-sulfonylchloride.

ESI-MS: 441.0/443.0 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.65 (m, 1H), 7.3-7.4 (m, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 3.3 (m, 1H), 3.0 (m, 1H), 2.8 (m, 1H), 2.65 (m, 1H), 2.35-2.55 (m, 3H), 2.25 (m, 1H), 1.75 (m, 1H), 1.5 (m, 2H), 0.9 (m, 3H).

Example 18 4-Isopropyl-N-[4-((S)-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.515 g of 4-isopropyl-N-[4-((S)-1-allyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (1.34 mmol) were dissolved in 10 ml of tetrahydrofuran and added to a solution of 0.049 g tris-(dibenzylidenaceton)-dipalladium(0) (0.05 mmol) and 0.023 g of 1,4-bis(diphenylphospino)-butane (0.05 mmol) in 3 ml of tetrahydrofuran under argon, followed by addition of 0.227 mg of 2-mercapto benzoic acid (1.47 mmol) in 3 ml of tetrahydrofuran. The mixture was stirred for 2 h at room temperature, the solvent evaporated under reduced pressure and water containing 1 N hydrochloride acid added to adjust the pH to acidic values. The aqueous phase was extracted three times with ethyl acetate, then adjusted to alkaline pH with 1 N sodium hydroxide, extracted twice with diethyl ether and twice with dichloromethane. The combined organic layers were dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield 0.215 g of the secondary amine.

ESI-MS: 345.1 [M+H]⁺

Example 19 2-Fluoro-4-isopropenyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.2 g of 2-fluoro-4-bromo-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (0.45 mmol), 1.05 g of tributyl-isopropenyl-stannane (3.17 mmol) and 0.026 g of tetrakistriphenylphosphinepalladium(0) (0.02 mmol) were dissolved in 3 ml of tetrahydrofuran and stirred for 40 minutes at 150° C. in the microwave (CEM). The reaction mixture was filtered over celite, washed with methanol, and the filtrate evaporated to dryness under reduced pressure. The residue was purified via silica gel chromatography with cyclohexane/ethyl acetate (20%), ethyl acetate, and ethyl acetate/methanol (15%). Fractions containing the product were combined, the solvent evaporated to yield 0.176 g of the title product.

ESI-MS: 403.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.7 (m, 1H), 7.2-7.3 (m, 2H), 7.1 (m, 2H), 7.0 (m, 2H), 5.45 (m, 1H), 5.25 (m, 1H), 3.3-3.4 (m, 1H), 2.6 (m, 1H), 2.25-2.35 (m, 1H), 2.1 (s, 3H), 1.8-1.9 (m, 2H), 1.55-1.7 (m, 3H), 1.2-1.4 (m, 3H), 0.9 (m, 3H).

Example 20 3-Fluoro-4-isopropenyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

3-Fluoro-4-isopropenyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide were obtained following the same synthetic procedure as described for 2-fluoro-4-Isopropenyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide starting from 3-fluoro-4-bromo-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide yielding 0.17 g of the desired.

ESI-MS: 403.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.3-7.5 (m, 3H), 7.15 (d, 2H), 7.0 (d, 2H), 5.3 (m, 2H), 3.35 (m, 1H), 2.6 (m, 2H), 2.3 (m, 1H), 2.1 (s, 3H), 1.8-1.9 (m, 2H), 1.55-1.7 (m, 3H), 1.2-1.4 (m, 1H), 0.9 (m, 4H).

Example 21 2-Fluoro-4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.161 g of 2-fluoro-4-isopropenyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (0.37 mmol) were dissolved in 20 ml methanol, a tip of a spatula 10% Pd/C added, and the reaction mixture hydrogenated for 3 h at 50° C. The reaction mixture was filtered over celite, washed with methanol, and the filtrate evaporated to dryness under reduced pressure. The residue was purified via silica gel chromatography on a chromabond column with ethyl acetate and ethyl acetate/methanol (10%). Fractions containing the product were combined, the solvent evaporated to yield 0.11 g of the title product.

ESI-MS: 405.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.7 (m, 1H), 6.9-7.2 (several m, 6H), 3.5-3.6 (m, 2H), 3.2-3.4 (m, 2H), 2.85-3.05 (m, 4H), 2.4 (m, 1H), 2.1 (m, 1H), 1.8 (m, 2H), 1.2 (d, 6H), 0.95 (m, 3H).

Example 22 3-Fluoro-4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.122 g of 3-fluoro-4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide were obtained following the same synthetic procedure as described for 2-fluoro-4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide starting from 3-fluoro-4-isopropenyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide.

ESI-MS: 405.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.5 (m, 1H), 7.4 (m, 1H), 7.3 (m, 1H), 7.1 (d, 2H), 7.0 (d, 2H), 3.4 (m, 1H), 3.2 (m, 2H), 3.05 (m, 1H), 2.9 (m, 1H), 2.6-2.7 (m, 3H), 2.1 (m, 1H), 1.9 (m, 1H), 1.6-1.7 (m, 2H), 1.2 (d, 6H), 0.9 (m, 3H).

Example 23 4-Isopropoxy-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.083 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-isopropoxy-benzene-sulfonylchloride.

ESI-MS: 403.3 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.3 and 11.1 (2 s, broad, 1H), 10.2 (m, 1H), 7.7 (d, 2H), 7.25 (m, 1H), 7.2 (m, 1H), 6.95-7.1 (m, 4H), 4.7 (m, 1H), 2.9-3.8 (several m, 7H), 2.3 (m, 1H), 1.85-2.0 (m, 1H), 1.7 (m, 2H), 1.2 (d, 6H), 0.9 (m, 3H).

Example 24 Indan-5-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide hydrochloride

0.15 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available indan-5-sulfonylchloride.

ESI-MS: 385.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.3 and 11.1 (2 s, broad, 1H), 10.25 (m, 1H), 7.6 (s, 1H), 7.5 (d, 1H), 7.35 (d, 1H), 7.25 (m, 1H), 7.2 (m, 1H), 7.05 (m, 2H), 3.2-3.8 (several m, 4H), 2.8-3.1 (several m, 7H), 2.3 (m, 1H), 1.8-2.05 (m, 3H), 1.6-1.7 (m, 2H), 0.9 (m, 3H).

Example 25 4-Bromo-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.07 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-bromo-benzenesulfonylchloride.

ESI-MS: 425.0 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.3 and 11.05 (2 s, broad, 1H), 10.45 (m, 1H), 7.8 (d, 2H), 7.7 (d, 2H), 7.3 (m, 1H), 7.2 (m, 1H), 7.05 (m, 2H), 2.9-3.8 (several m, 7H), 2.3 (m, 1H), 1.85-2.05 (m, 1H), 1.6-1.8 (m, 2H), 0.9 (m, 3H).

Example 26 4-Acetyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.159 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide using commercially available 4-acetyl-benzene-sulfonylchloride.

ESI-MS: 387.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 8.0 (d, 2H), 7.8 (d, 2H), 7.15 (d, 2H), 6.95 (d, 2H), 3.3 (m, 1H), 3.0 (m, 1H), 2.8 (m, 1H), 2.65 (m, 1H), 2.6 (s, 3H), 2.35-2.5 (m, 3H), 2.25 (m, 1H), 1.8 (m, 1H), 1.5 (m, 2H), 0.9 (m, 3H).

Example 27 4-Cyclopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.3 g of 4-bromo-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (0.71 mmol), 0.079 g of cyclopropylboronic acid (0.92 mmol), 0.526 g of potassium phosphate (2.48 mmol) and 0.02 g of ricyclohexylphosphin were dissolved in a mixture of 4 ml of toluene and 2 ml of water. After addition of 0.008 g of palladium(II)-acetate (0.04 mmol), the reaction mixture was stirred for 1 h at 100° C. in the microwave (CEM). The solution was decanted, the remaining suspension containing the catalyst washed again with ethyl acetate, the combined solvent extracts evaporated to dryness, redissolved in ethyl acetate and washed with water. The aqueous phase was reextracted once with ethyl acetate, the organic layers combined, dried over magnesium sulfate, filtered and evaporated under reduced pressure. The crude product was purified via silica gel chromatography with dichloromethane, dichloromethane-methanol (5.5%). Fractions containing the product were combined, the solvent removed, to yield 0.066 g of the title product.

ESI-MS: 385.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.65 (d, 2H), 6.95-7.15 (m, 6H), 3.3 (m, 1H), 3.1 (m, 1H), 2.9 (m, 1H), 2.75 (m, 1H), 2.5 (m, 3H), 2.35 (m, 1H), 2.0 (m, 1H), 1.8 (m, 2H), 1.55 (m, 2H), 1.25 (m, 1H), 1.0 (m, 1H), 0.9 (m, 3H), 0.7 (m, 1H).

Example 28 5-Bromo-thiophene-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide hydrochloride

0.05 g of the title product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 5-bromo-thiophene-2-sulfonylchloride.

ESI-MS: 431.0 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.2 and 11.0 (2 s, broad, 1H), 10.65 (m, 1H), 7.2-7.4 (several m, 4H), 7.1 (m, 2H), 3.0-3.8 (several m, 7H), 2.3 (m, 1H), 1.85-2.0 (m, 1H), 1.7 (m, 2H), 0.9 (m, 3H).

Example 29 5-Isopropenyl-thiophene-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

0.154 g of the title product were obtained following the same synthetic procedure as described for 2-fluoro-4-Isopropenyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide starting from 5-bromo-thiophene-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide.

ESI-MS: 391.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.3 (m, 1H), 7.25 (m, 1H), 7.2 (d, 2H), 7.05 (d, 2H), 6.9 (m, 1H), 5.4 (s, 1H), 5.1 (s, 1H), 3.3 (m, 1H), 3.05 (m, 1H), 2.9 (m, 1H), 2.7 (m, 1H), 2.5 (m, 2H), 2.3 (m, 1H), 2.05 (s, 3H), 1.85 (m, 1H), 1.6 (m, 2H), 1.3 (m, 1H), 0.9 (m, 3H).

Example 30 4-Propyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.037 g of the title product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-propyl-benzenesulfonylchloride.

ESI-MS: 387.2 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 10.3 (m, 1H), 7.7 (d, 2H), 7.3 (d, 2H), 7.25 (m, 1H), 7.2 (m, 1H), 7.05 (m, 2H), 2.9-3.8 (several m, 7H), 2.55 (m, 2H), 2.3 (m, 1H), 1.85-2.0 (m, 1H), 1.7 (m, 2H), 1.55 (m, 2H), 0.9 (m, 3H), 0.8 (m, 3H).

Example 31 N-[6-(1-propyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide 31.1 5-Nitro-2-vinyl-pyridine

0.5 g of 2-chloro-5-nitro-pyridine (3.15 mmol), 1.2 g of tributyl-vinyl-stannane (3.78 mmol), 0.036 g of tetrakistriphenylphosphinepalladium(0) (0.03 mmol), and 0.024 g of triphenylphosphin (0.09 mmol) were dissolved in 20 ml of toluene and stirred for 2 h under reflux. Upon cooling to room temperature, 10 ml of water were added, the aqueous layer was extracted with ethyl acetate, and the combined organic layers were washed with saturated sodium chloride, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure. The crude product was purified via silica gel chromatography with cyclohexane/ethyl acetate (10%). Fractions containing the product were combined, the solvent evaporated to yield 0.528 g of the desired product.

ESI-MS: 151.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 9.4 (s, 1H), 8.4 (m, 1H), 7.45 (m, 1H), 6.9 (q, 1H), 6.45 (m, 1H), 5.7 (m, 1H).

31.2 2-(1-Benzyl-pyrrolidin-3-yl)-5-nitro-pyridine

0.15 g of 5-nitro-2-vinyl-pyridine were dissolved in 2.5 ml of dichloromethane, 0.149 g of trifluoroacetic acid (1.31 mmol) were added, followed by slow addition of 0.928 g of N-benzyl-N-(methoxymethyl)-N-trimethylsilylmethylamine (3.91 mmol). Stirring was continued at room temperature for 1 h, before the reaction mixture was washed with aqueous sodium hydrogencarbonate, the aqueous layer reextracted with dichloromethane, the organic layers combined, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure. The crude product was purified via silica gel chromatography with ethyl acetate. Fractions containing the product were combined, the solvent evaporated to yield 0.186 g of the desired product.

ESI-MS: 284.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 9.25 (m, 1H), 8.3 (m, 1H), 7.4 (m, 1H), 7.15-7.3 (m, 5H), 3.6 (d, 2H), 3.55 (m, 1H), 2.9 (m, 1H), 2.7 (m, 2H), 2.65 (m, 1H), 2.3 (m, 1H), 2.0 (m, 1H).

31.3 2-(1-Benzyl-pyrrolidin-3-yl)-5-amino-pyridine

0.181 g of 2-(1-benzyl-pyrrolidin-3-yl)-5-nitro-pyridine were dissolved in 10 ml of methanol and 1.15 g of tin dichloride SnCl₂ (5.11 mmol) were added in portions. Stirring was continued for 1 h under refluxing conditions. The solvent was evaporated, the residue treated with 1 N aqueous sodium hydroxide and ethyl acetate, and filtered. The two phases were separated, the aqueous phase was extracted twice with ethyl acetate, and the combined organic layers were dried over magnesium sulfate, filtered, and the solvent was evaporated under reduced pressure to yield 0.191 g of the crude amino product which was used in the next reaction without further purification.

ESI-MS: 254.1 [M+H]⁺

31.4 N-[6-(1-Benzyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide

0.12 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-propyl-benzenesulfonylchloride. The crude product was thereby purified via silica gel chromatography on a cromabond column with ethyl acetate as eluent.

ESI-MS: 436.1 [M+H]⁺

31.5 N-[6-(Pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide

0.12 g of N-[6-(1-benzyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide (0.28 mmol) were dissolved in 20 ml of methanol, a tip of a spatula 10% Pd/C was added, and the reaction mixture was hydrogenated for 2 h at room temperature and 4 h at 50° C. The catalyst was removed by filtration and the filtrate evaporated to dryness to yield 0.088 g of the desired debenzylated compound.

ESI-MS: 346.1 [M+H]⁺

31.6 N-[6-(1-propyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide

0.088 g of N-[6-(1-benzyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide (0.25 mmol) were dissolved in 10 ml of dichloromethane. 0.022 g of propionyl aldehyde (0.38 mmol), 0.023 g of acetic acid (0.38 mmol) and 0.081 g of sodium triacetoxyborohydride (0.38 mmol) were added and stirred for 1 h at room temperature. Water was added, the pH adjusted to 10 with 1 N sodium hydroxide, extracted three times with ethyl acetate, the organic layers combined and evaporated to dryness. The crude material was purified via silica gel chromatography with dichloromethane/methanol 20%. Fractions containing the product were combined and the solvent evaporated to yield 0.026 mg of the product.

ESI-MS: 388.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 8.15 (m, 1H), 7.7 (d, 2H), 7.5 (m, 1H), 7.3 (d, 2H), 7.1 (m, 1H), 3.5 (m, 1H), 3.2 (m, 1H), 2.95 (m, 2H), 2.75 (m, 2H), 2.5-2.65 (m, 2H), 2.3 (m, 1H), 2.0 (m, 1H), 1.6 (m, 2H), 1.2 (m, 6H), 0.9 (m, 3H).

Example 32 4-Dimethylaminomethyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide 32.1 4-Formyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.584 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide using commercially available 4-formyl-benzene-sulfonylchloride. The product was used in the subsequent step without further purification.

ESI-MS: 373.4 [M+H]⁺

32.2 4-Dimethylaminomethyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.3 g of 4-formyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (0.81 mmol) were dissolved in 20 ml of dichloromethane, 0.6 ml of a 2 M solution of dimethylamine in tetrahydrofuran (1.21 mmol) added, followed by addition of 0.07 ml of acetic acid and 0.256 g sodium triacetoxyborohydride. The reaction mixture was stirred for 15 h at room temperature, water added, the pH adjusted to alkaline conditions with 1 N aqueous sodium hydroxide, and the aqueous layer extracted twice with diethylether. The combined ether extracts were dried over magnesium sulfate, filtered and the solvent evaporated under reduced pressure. The crude product was purified via preparative HPLC on a 40 mm Deltapak column with methanol/water/0.1% acetic acid. Fractions containing the product were combined, the solvent evaporated and the product isolated after extraction of an alkaline aqueous layer. (0.051 g).

ESI-MS: 402.1 [M+H]⁺

Example 33 4-sec-Butyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.082 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-sec-butylbenzenesulfonylchloride (ART-Chem).

ESI-MS: 401.1 [M+H]⁺

Example 34 4-Bromo-3,6-difluoro-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.131 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]benzenesulfonamide using commercially available 4-bromo-3,6-difluoro-benzenesulfonylchloride.

ESI-MS: 459.0/461.0 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.55 (m, 1H), 7.4 (m, 1H), 7.15 (d, 2H), 7.0 (d, 2H), 4.7 (s, very broad, 2H), 3.3 (m, 1H), 3.0 (m, 1H), 2.85 (m, 1H), 2.7 (m, 1H), 2.4-2.6 (m, 3H), 2.25 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.85 (m, 3H).

Example 35 4-Isobutyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.164 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride using commercially available 4-isobutyl-benzenesulfonylchloride.

ESI-MS: 401.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.3 and 11.1 (2 s, broad, 1H), 10.3 (m, 1H), 7.7 (d, 2H), 7.3 (d, 2H), 7.25 (m, 1H), 7.2 (m, 1H), 7.05 (m, 2H), 2.9-3.8 (several m, 9H), 2.3 (m, 1H), 1.8-2.0 (m, 2H), 1.7 (m, 2H), 0.9 (m, 3H), 0.8 (m, 6H).

Example 36 4-Carboxy-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.105 g of the desired product were obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide using commercially available 4-carboxy-benzenesulfonylchloride. The product however was finally isolated as precipitate from the aqueous layer through filtration, stirring with methanol, again filtration, and drying.

ESI-MS: 389.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 10.25 (s, 1H), 9.6 (s, broad, 1H), 7.9 (d, 2H), 7.7-7.8 (m, 4H), 7.3 (d, 2H), 3.0-3.9 (several broad m, 7H), 2.4 (m, 1H), 2.0 (m, 1H), 1.7 (m, 2H), 0.9 (m, 3H).

Example 37 4-Cyclopentyl-N-[4-(S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

0.278 g of 4-bromo-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (0.66 mmol) were dissolved in 5 ml tetrahydrofuran. 0.027 g of 1,1′-bis(diphenylphosphino)ferrocene (dppf)PdCl₂ (0.03 mmol) and 0.008 g of CuI (0.04 mmol) were added, followed by dropwise addition of 2 ml commercially available 0.5 M cyclopentylzincbromide in tetrahydrofuran. After stirring for 15 h at room temperature and further addition of cyclopentylzincbromide, the reaction mixture was treated with ethyl acetate, washed with water, and the organic layer filtered over celite, washed with ethyl acetate, washed with water, and the organic layer dried over magnesium sulfate, filtered and the solvent removed under reduced pressure. The crude product was purified via preparative HPLC (Delta Pak column, 40 mm diameter) using methanol/water/0.1% acetic acid as eluent. Fractions containing the product were combined, methanol removed, and, after addition of 0.2 ml of 1 N hydrochloride acid, the aqueous layer lyophilised to yield 0.0107 g of the product.

ESI-MS: 413.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 12.4 & 12.3 (2 s, broad, 1H), 7.7-7.9 (m, 3H), 7.25 (m, 2H), 7.0-7.2 (m, 3H), 4.0 (m, broad, 2H), 3.75 (m, broad, 1H), 2.5-3.0 (several m broad, 6H), 2.35 (m, broad, 1H), 1.5-2.1 (several m, broad, 10H), 1.0 (m, broad, 3H).

Example 38 4-Isopropyl-N-[4-((S)-1-(3-fluoro-propyl)-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.215 g of 4-isopropyl-N-[4-((S)-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (0.0.62 mmol) and 0.16 g of toluene-4-sulfonic acid 3-fluoro-propyl ester (0.69 mmol) were dissolved in 5 ml of dimethylformamide, 0.43 ml of triethylamine added and the reaction stirred for 1 h at 50° C. Additional toluene-4-sulfonic acid 3-fluoro-propyl ester and triethylamine were added to drive the reaction to completion. After stirring at room temperature for 15 h, the solvent was evaporated, the residue re-dissolved in dichloromethane, and the organic layer washed with 1 N aqueous sodium hydroxide. The aqueous phase was extracted twice with dichloromethane, the organic layers combined, dried over magnesium sulfate, filtered and the solvent evaporated. The crude product was purified via silica gel chromatography (chromabond column) using dichloromethane/methanol 0-3%. Fractions containing the product were collected and the solvent evaporated to yield 0.115 g of the desired product.

ESI-MS: 405.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.3 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 4.6 (m, 1H), 4.45 (m, 1H), 3.3 (m, 1H), 2.95 (m, 2H), 2.8 (m, 1H), 2.5-2.7 (several m, 3H), 2.45 (m, 1H), 2.25 (m, 1H), 1.75-2.0 (several m, 3H), 1.2 (m, 6H).

Example 39 3-Trifluoromethyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.11 g of the desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide using commercially available 3-trifluoromethyl-benzenesulfonylchloride.

ESI-MS: 427.2 [M+H]⁺

Example 40 4-Butyloxy-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

The desired product was obtained following the same synthetic procedure as described for 4-isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide using commercially available 4-butyloxy-benzenesulfonylchloride.

ESI-MS: 417.3 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.15 (d, 2H), 6.95 (d, 2H), 6.85 (d, 2H), 5.6 (s, broad, 1H), 3.95 (t, 2H), 3.3 (m, 1H), 3.0 (m, 1H), 2.8 (m, 1H), 2.6 (m, 1H), 2.45 (m, 1H), 2.35 (m, 2H), 2.25 (m, 1H), 1.75 (m, 3H), 1.5 (m, 4H), 0.96 (m, 6H).

Example 41 4-(2,2-Difluorocyclopropyl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

The desired product were obtained following the same synthetic procedure as described for 4-Isopropyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide using 4-(2,2-difluoro-cyclopropyl)-benzenesulfonylchloride.

ESI-MS: 421.15 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (d, 2H), 7.25 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 5.65 (bs, 1H), 3.3 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.75 (m, 1H), 2.65 (m, 1H), 2.45 (m, 3H), 2.3 (m, 1H), 1.9 (m, 1H), 1.8 (m, 1H), 1.65 (m, 1H), 1.55 (m, 2H), 0.95 (t, 3H).

Example 42 N-[3-(1-Propyl-pyrrolidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide×HCl 42.1 3-[3-(4-Trifluoromethoxy-benzenesulfonylamino)-phenyl]-pyrrolidine-1-carboxylic acid methyl ester

To a solution of 3-(3-amino-phenyl)-pyrrolidine-1-carboxylic acid methyl ester (500 mg, 2.27 mmol) and triethylamine (500 mg, 4.94 mmol) in THF (20 ml) at 10° C. 4-trifluoromethoxy-benzenesulfonylchloride (600 mg, 2.3 mmol) was added. The mixture was allowed to come to room temperature and was stirred for 16 h. The mixture was poured into water and extracted three times with ethyl acetate. The organic layer was washed with water and saturated sodium chloride solution, dried over MgSO₄ and evaporated under reduced pressure to give the product as a brown oil (1 g, 99%).

42.2 N-(3-Pyrrolidin-3-yl-phenyl)-4-trifluoromethoxy-benzenesulfonamide

3-[3-(4-Trifluoromethoxy-benzenesulfonylamino)-phenyl]-pyrrolidine-1-carboxylic acid methyl ester (500 mg, 1.13 mmol) and HCl (8M, 137.82 mmol) in EtOH (10 ml) were heated under reflux for 48 h. The mixture was extracted twice with ethyl acetate and then NaOH (2M) was added. The aqueous phase was extracted twice with ethyl acetate. The combined organic layers were washed with water and saturated sodium chloride solution, dried over MgSO₄ and evaporated under reduced pressure to give the product as a brown oil (200 mg, 46%).

42.3 N-[3-(1-Propyl-pyrrolidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide×HCl

A solution of N-(3-pyrrolidin-3-yl-phenyl)-4-trifluoromethoxy-benzenesulfonamide (200 mg, 0.52 mmol), acetic acid (30 μl, 0.52 mmol) and propionic aldehyde (30 mg, 0.52 mmol) were stirred in dichloromethane (20 ml) for 30 min at room temperature before sodium triacetoxyborohydride (165 mg, 0.78 mmol) was added in portions at 15° C. The mixture was stirred for 16 h at room temperature. The mixture was poured into water/dichloromethane (1/1) and the organic layer was washed with water, dried over MgSO₄ and evaporated under reduced pressure. The residue was purified by column chromatography (CH₂Cl₂/methanol—2%, 3%, 4%, 6%) to give a brown oil. To a solution of this oil in diethylether HCl in diethylether (1M) was added and the mixture was evaporated under reduced pressure to give the product as a white foam, which was dried in vacuo (55 mg, 23%).

MS (ESI) m/z: 429.15 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 11.0-11.2 (m, 1H), 10.6 (s, 1H), 7.90-7.95 (m, 2H), 7.60-7.65 (m, 2H), 7.20-7.25 (m, 1H), 6.95-7.10 (m, 3H), 3.35-3.80 (m, 3H), 3.20-3.30 (m, 1H), 3.05-3.15 (m, 2H), 2.90-3.05 (m, 1H), 2.25-2.35 (m, 1H), 1.85-2.05 (m, 1H), 1.65-1.80 (m, 2H), 0.90-1.00 (m, 3H).

Example 43 4-Isopropyl-N-[3-(1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide×HCl 43.1 3-[3-(4-Isopropyl-benzenesulfonylamino)-phenyl]-pyrrolidine-1-carboxylic acid methyl ester

To a solution of 3-(3-amino-phenyl)-pyrrolidine-1-carboxylic acid methyl ester (500 mg, 2.27 mmol) and triethylamine (500 mg, 4.94 mmol) in THF (20 ml) at 10° C. 4-isopropyl-benzenesulfonylchloride (500 mg, 2.27 mmol) was added. The mixture was allowed to come to room temperature and was stirred for 16 h. The mixture was poured into water and extracted three times with ethyl acetate. The organic layer was washed with water and saturated sodium chloride solution, dried over MgSO₄ and evaporated under reduced pressure to give the product as a brown oil (1 g, 100%).

43.2 4-Isopropyl-N-(3-pyrrolidin-3-yl-phenyl)-benzenesulfonamide

3-[3-(4-Isopropyl-benzenesulfonylamino)-phenyl]-pyrrolidine-1-carboxylic acid methyl ester (900 mg, 1.13 mmol) and HCl (8M, 273.90 mmol) in EtOH (20 ml) were heated to reflux for 48 h. The mixture was extracted twice with ethyl acetate and then NaOH (2M) was added. The aqueous phase was extracted twice with ethyl acetate. The combined organic layers were washed with water and saturated sodium chloride solution, dried over MgSO₄ and evaporated under reduced pressure to give the product as a brown oil (100 mg, 13%).

43.3 4-Isopropyl-N-[3-(1-Propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide×HCl

A solution of 4-isopropyl-N-(3-pyrrolidin-3-yl-phenyl)-benzenesulfonamide (100 mg, 0.29 mmol), acetic acid (20 μl, 0.29 mmol) and propionic aldehyde (16.86 mg, 0.29 mmol) were stirred in dichloromethane (20 ml) for 30 min at room temperature before sodium triacetoxyborohydride (123 mg, 0.58 mmol) was added in portions at room temperature. The mixture was stirred for 16 h at room temperature. The mixture was poured into saturated aqueous NaHCO₃/dichloromethane (1/1) and the organic layer was washed with water and saturated sodium chloride solution, dried over MgSO₄ and evaporated under reduced pressure. The residue was purified by column chromatography (CH₂Cl₂/methanol—2%, 4%, 6%). To a solution of the purified product in diethylether HCl in diethylether (1M) was added and the mixture was evaporated under reduced pressure to give the product as a white foam, which was dried in vacuo (55 mg, 45%).

MS (ESI) m/z: 387.15 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 8.95-9.15 (m, 1H), 7.72-7.82 (m, 2H), 6.85-7.31 (m, 6H), 3.85-4.05 (m, 1H), 3.65-3.79 (m, 1H), 3.25-3.56 (m, 1H), 3.0-3.2 (m, 2H), 2.78-3.0 (m, 2H), 2.43-2.55 (m, 1H), 1.80-2.40 (m, 5H), 1.12-1.21 (m, 6H), 0.9-1.02 (m, 3H).

Example 44 N-[3-(1-Cyclopropylmethyl-pyrrolidin-3-yl)-phenyl]-4-isopropyl-benzenesulfonamide×HCl

A solution of 4-isopropyl-N-(3-pyrrolidin-3-yl-phenyl)-benzenesulfonamide (100 mg, 0.29 mmol), acetic acid (20 μl, 0.29 mmol) and cyclopropanecarbaldehyde (20.35 mg, 0.29 mmol) were stirred in dichloromethane (20 ml) for 30 min at room temperature before sodium triacetoxyborohydride (123 mg, 0.58 mmol) was added in portions at room temperature. The mixture was stirred for 16 h at room temperature. The mixture was poured into saturated aqueous NaHCO₃/dichloromethane (1/1) and the organic layer was washed with water and saturated sodium chloride solution, dried over MgSO₄ and evaporated under reduced pressure. The residue was purified by column chromatography (CH₂Cl₂/methanol—2%, 4%, 6%). To a solution of the purified product in diethylether HCl in diethylether (1M) was added and the mixture was evaporated under reduced pressure to give the product as a brown foam, which was dried in vacuo (50 mg, 40%).

MS (ESI) m/z: 399.25 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 9.05-9.35 (m, 1H), 7.72-7.81 (m, 2H), 6.82-7.35 (m, 6H), 3.69-4.05 (m, 2H), 2.70-3.25 (m, 5H), 2.0-2.55 (m, 3H), 1.1-1.3 (m, 7H), 0.6-0.8 (m, 2H), 0.47-0.5 (m, 2H).

Example 45 N-[3-(1-Allyl-pyrrolidin-3-yl)-phenyl]-4-isopropyl-benzenesulfonamide×HCl

A solution of 4-isopropyl-N-(3-pyrrolidin-3-yl-phenyl)-benzenesulfonamide (100 mg, 0.29 mmol), allylbromide (38 mg, 0.31 mmol), potassium carbonate (60 mg, 0.43 mmol), and potassium fluoride (0.2 mg, 0.003 mmol) in acetone (20 ml) were heated to reflux for 4 h. The mixture was evaporated under reduced pressure and the residue was partitioned between ethyl acetate and water. The organic layer was washed with saturated sodium chloride solution, dried over MgSO₄ and evaporated under reduced pressure. The residue was purified by column chromatography (CH₂Cl₂/methanol—2%, 4%, 6%). To a solution of the purified product in dichloromethane HCl in diethylether (1M) was added and the mixture was evaporated under reduced pressure to give the product as a brown foam, which was dried in vacuo (25 mg, 21%).

MS (ESI) m/z: 385.15 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 8.79-8.95 (m, 1H), 7.72-7.81 (m, 2H), 6.85-7.30 (m, 6H), 6.05-6.20 (m, 1H), 5.43-5.56 (m, 2H), 3.10-3.95 (m, 6H), 2.80-2.95 (m, 1H), 1.90-2.55 (m, 3H), 1.15-1.25 (m, 6H).

Example 46 4-Isopropyl-N-[6-(1-propyl-azetidin-3-yl)-pyridin-3-yl]-benzenesulfonamide 46.1 3-Hydroxy-azetidine-1-carboxylic acid tert-butyl ester

To a degassed solution of 1-benzhydryl-azetidin-3-ol (4.75 g, 19.84 mmol) in methanol (methanol) (150 ml) were added ammonium formate (8.76 g, 138.91 mmol), 10% Pd/C (450 mg) and Boc₂O (di-tert-butyl dicarbonate) (13 g, 59.56 mmol). The resulting suspension was heated to reflux under N₂ for 1 h. It was then cooled down to room temperature, filtered through a short pad of celite and concentrated. The residue was dissolved in CH₂Cl₂ and washed with water. The organic layer was dried (Na₂SO₄) and evaporated. The raw substance was chromatographed on silica gel (heptane:ethyl acetate (ethyl acetate), 1:1) to afford the title compound (3.30 g, 96%) as white crystals.

MS (ESI+) m/z=118.1 [M-tBu+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 1.43 (s, 9H), 2.35 (d, J=6.2 Hz, 1H), 3.80 (dd, J=10.4, 4.4 Hz, 2H), 4.15 (dd, J=9.6, 6.7 Hz, 2H), 4.58 (m, 1H).

46.2 3-Iodo-azetidine-1-carboxylic acid tert-butyl ester

A solution of 3-hydroxy-azetidine-1-carboxylic acid tert-butyl ester (3.35 g, 19.34 mmol) in toluene (200 ml) was treated with imidazole (3.95 g, 58.01 mmol), triphenylphosphine (10.14 g, 38.65 mmol) and 12 (7.36 g, 28.99 mmol). The mixture was heated at 100° C. for 1 h, cooled down to room temperature and next poured into saturated aqueous NaHCO₃ (30 ml). Excess triphenylphosphine was destroyed by addition of iodine until 12 coloration persisted in organic layer. The latter was washed with 5% aqueous Na₂S₂O₃, dried over Na₂SO₄ and evaporated. Purification of the crude product by flash column chromatography (heptane:ethyl acetate, 2:1) provides the title compound (5.19 g, 95%) as a light yellow oil.

MS (ESI+) m/z=227.9 [M-tBu+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 1.44 (s, 9H), 4.29 (dd, J=10.4, 5.4 Hz, 2H), 4.47 (m, 1H), 4.64 (dd, J=9.5, 8.0 Hz, 2H).

46.3 3-(5-Nitro-pyridin-2-yl)-azetidine-1-carboxylic acid tert-butyl ester

Zn dust (520 mg, 7.95 mmol) was vigorously stirred in THF (2 ml) under nitrogen and 1,2 dibromoethane (84 μl, 0.97 mmol) was added. The suspension was then heated at 80° C. for 8 min and next allowed to cool to room temperature. Trimethylsilyl chloride (115 μl, 0.92 mmol) in THF (1 ml) was then added and the mixture further stirred at room temperature for 45 min. A solution of 3-iodo-azetidine-1-carboxylic acid tert-butyl ester (1.74 g, 6.14 mmol) in THF (2 ml) was then added dropwise to the solution over a period of 15 min and the reaction mixture stirred at room temperature for 2 h. Pd₂(dba)₃ (90 mg, 0.10 mmol) and P(2-furyl)₃ (85 mg, 0.36 mmol) were then added to the mixture, followed by 2-bromo-5-nitropyridine (1.37 g, 6.74 mmol) in THF (4 ml). The mixture was then heated at 55° C. for 3 h, cooled to room temperature and quenched with saturated aqueous NaCl. Extraction with CH₂Cl₂, drying (Na₂SO₄) of the organic phase, filtration and evaporation in vacuo provided the crude material, which was purified by flash column chromatography (heptane:ethyl acetate, 3:1) to give the title compound (1.22 g, 71%) as a light yellow oil.

MS (ESI+) m/z=224.1 [M-tBu+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 1.47 (s, 9H), 3.99 (m, 1H), 4.18 (dd, J=8.2, 6.1 Hz, 2H), 4.35 (t, J=8.6 Hz, 2H), 7.42 (d, J=8.5 Hz, 1H), 8.45 (dd, J=8.5, 2.6 Hz, 1H), 9.44 (d, J=2.4 Hz, 1H).

46.4 1-[3-(5-Nitro-pyridin-2-yl)-azetidin-1-yl]-propan-1-one

A solution of 3-(5-nitro-pyridin-2-yl)-azetidine-1-carboxylic acid tert-butyl ester (1.22 g, 4.36 mmol) in CH₂Cl₂ (100 ml) was treated with trifluoroacetic acid (TFA) (15 ml) and then stirred at room temperature for 2 h. After concentration, the raw mixture was digested in CH₂Cl₂ and washed with saturated aqueous NaHCO₃. The aqueous phase was extracted with CH₂Cl₂ (×3), the combined organic layers dried over Na₂SO₄ and evaporated. The raw material was next dissolved in THF (80 ml) and the solution cooled to 0° C. Propionyl chloride (460 μl, 5.26 mmol) and triethylamine (735 μl, 5.28 mmol) were next added, the mixture allowed to reach 20° C. and stirred for a further 12 h. It was then diluted with CH₂Cl₂ and washed successively with 1 N aqueous HCl, saturated aqueous NaHCO₃ and water. The organic layer was dried (Na₂SO₄) and evaporated. The residue was chromatographed on silica gel (CH₂Cl₂:methanol, 49:1) to afford the title compound (880 mg, 85% for two steps) as a brown oil.

MS (ESI+) m/z=236.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 1.16 (t, J=7.5 Hz, 3H), 2.18 (q, J=7.5 Hz, 2H), 4.07 (m, 1H), 4.22 (dd, J=9.5, 6.0 Hz, 1H), 4.44 (m, 2H), 4.52 (t, J=8.4 Hz, 1H), 7.42 (d, J=8.5 Hz, 1H), 8.46 (dd, J=8.5, 2.6 Hz, 1H), 9.45 (d, J=2.5 Hz, 1H).

46.5 4-isopropyl-N-[6-(1-propionyl-azetidin-3-yl)-pyridin-3-yl]-benzenesulfonamide

1-[3-(5-nitro-pyridin-2-yl)-azetidin-1-yl]-propan-1-one (340 mg, 1.44 mmol) was dissolved in ethanol (EtOH) (25 ml) and SnCl₂.2H₂O (1.63 g, 7.22 mmol) was added. The resulting mixture was refluxed for 8 h and the solvent next removed under vacuum. The raw material was dissolved in ethyl acetate and washed successively with 2N aqueous NaOH (×2) and water. The organic layer was dried (Na₂SO₄), filtered through a pad of celite and evaporated. Half of the crude material was then dissolved in CH₂Cl₂ (40 ml) and pyridine (115 μl, 1.41 mmol) followed by 4-isopropylbenzensulfonylchloride (190 μl, 1.05 mmol) were added dropwise. After stirring at room temperature overnight, the reaction mixture was diluted with CH₂Cl₂ and washed successively with 1 N aqueous HCl, saturated aqueous NaHCO₃ and water. The organic layer was dried (Na₂SO₄) and evaporated. The residue was chromatographed on silica gel (heptane:ethyl acetate, 1:3) to afford the title compound (150 mg, 54% for two steps) as a light yellow oil.

MS (ESI+) m/z=388.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 1.14 (t, J=7.5 Hz, 3H), 1.24 (d, J=6.9 Hz, 6H), 2.14 (q, J=7.5 Hz, 2H), 2.94 (m, 1H), 3.87 (m, 1H), 4.10 (dd, J=9.7, 5.9 Hz, 1H), 4.34 (m, 2H), 4.42 (t, J=8.5 Hz, 1H), 7.12 (d, J=8.4 Hz, 1H), 7.31 (m, 3H), 7.59 (dd, J=8.4, 2.6 Hz, 1H), 7.71 (d, J=8.4 Hz, 2H), 8.25 (d, J=2.3 Hz, 1H).

46.6 4-Isopropyl-N-[6-(1-propyl-azetidin-3-yl)-pyridin-3-yl]-benzenesulfonamide

To a solution of 4-isopropyl-N-[6-(1-propionyl-azetidin-3-yl)-pyridin-3-yl]-benzenesulfonamide (150 mg, 0.38 mmol) in THF (15 ml) was added dropwise 1M BH₃.THF (3.8 ml) and the mixture was stirred at room temperature for 12 h. It was then quenched by careful addition of 1 N aqueous HCl (10 ml) and the resulting solution was heated at reflux for 4 h. The solution was next cooled to room temperature, adjusted to pH˜8 with 2 N NaOH solution and diluted with CH₂Cl₂. Separation of the layers, drying (Na₂SO₄) of the organic phase, filtration and evaporation in vacuo provided the crude material, which was purified by flash column chromatography (CH₂Cl₂:methanol, 95:5) to give the title compound (95 mg, 66%) as a light yellow oil.

MS (ESI+) m/z=374.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.93 (t, J=7.4 Hz, 3H), 1.24 (d, J=6.9 Hz, 6H), 1.47 (m, 2H), 2.62 (m, 2H), 2.94 (m, 1H), 3.44 (m, 2H), 3.90 (m, 3H), 7.15 (d, J=8.4 Hz, 1H), 7.31 (d, J=8.3 Hz, 2H), 7.52 (dd, J=8.4, 2.6 Hz, 1H), 7.70 (d, J=8.3 Hz, 2H), 8.22 (d, J=1.8 Hz, 1H).

Example 47 N-[6-(1-Propyl-azetidin-3-yl)-pyridin-3-yl]-4-trifluoromethoxy-benzenesulfonamide 47.1 N-[6-(1-Propionyl-azetidin-3-yl)-pyridin-3-yl]-4-trifluoromethoxy-benzenesulfonamide

Following the same procedure as described above, the second half of the crude aminopyridine obtained in 46.5 was treated with pyridine (115 μl, 1.41 mmol) and 4-(trifluoromethoxy)benzensulfonylchloride (180 μl, 1.06 mmol) in CH₂Cl₂ (40 ml). Purification of the crude product by flash column chromatography (heptane:ethyl acetate, 1:2) provides the title compound (130 mg, 42% for two steps) as a light yellow oil.

MS (ESI+) m/z=430.0 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 1.14 (t, J=7.5 Hz, 3H), 2.16 (q, J=7.5 Hz, 2H), 3.86 (m, 1H), 4.08 (dd, J=9.5, 6.1 Hz, 1H), 4.34 (m, 2H), 4.43 (t, J=8.4 Hz, 1H), 7.12 (d, J=8.4 Hz, 1H), 7.29 (d, J=8.3 Hz, 2H), 7.60 (dd, J=8.4, 2.6 Hz, 1H), 7.87 (d, J=8.9 Hz, 2H), 8.01 (bs, 1H), 8.28 (d, J=2.0 Hz, 1H).

47.2 N-[6-(1-Propyl-azetidin-3-yl)-pyridin-3-yl]-4-trifluoromethoxy-benzenesulfonamide

Following the same procedure as described in Example 46.6, N-[6-(1-propionyl-azetidin-3-yl)-pyridin-3-yl]-4-trifluoromethoxy-benzenesulfonamide (130 mg, 0.30 mmol) in THF (15 ml) was treated with 1M BH₃.THF (3 ml). Purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 95:5) provides the title compound (75 mg, 60%) as a light yellow oil.

MS (ESI+) m/z=416.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.96 (t, J=7.4 Hz, 3H), 1.57 (m, 2H), 2.88 (t, J=7.7 Hz, 2H), 3.76 (t, J=8.1 Hz, 2H), 3.98 (m, 1H), 4.19 (t, J=8.3 Hz, 2H), 7.04 (d, J=8.4 Hz, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.33 (bs, 1H), 7.50 (dd, J=8.3, 2.5 Hz, 1H), 7.90 (d, J=8.8 Hz, 2H), 8.33 (d, J=2.3 Hz, 1H).

Example 48 4-Isopropyl-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzene sulfonamide 48.1 3-(4-Nitro-phenyl)-azetidine-1-carboxylic acid tert-butyl ester

Following the same procedure as described in 46.3, the organozinc species was prepared using 3-iodo-azetidine-1-carboxylic acid tert-butyl ester (1.74 g, 6.14 mmol), Zn dust (520 mg, 7.95 mmol), 1,2 dibromoethane (84 μl, 0.97 mmol) and trimethylsilyl chloride (115 μl, 0.92 mmol). It was then coupled with 1-bromo-4-nitrobenzene (1.24 g, 6.13 mmol) using Pd₂(dba)₃ (90 mg, 0.10 mmol) and P(2-furyl)₃ (85 mg, 0.36 mmol). Purification of the crude product by flash column chromatography (heptane:ethyl acetate, 4:1) provides the title compound (880 mg, 52%) as a light yellow oil.

MS (ESI+) m/z=223.1 [M-tBu+H]⁺.

48.2 1-[3-(4-Nitro-phenyl)-azetidin-1-yl]-propan-1-one

Using the same procedure as described in 46.4, 3-(4-nitro-phenyl)-azetidine-1-carboxylic acid tert-butyl ester was deprotected with TFA (15 ml) in CH₂Cl₂ (100 ml) and the resulting amine treated with propionyl chloride (290 μl, 3.31 mmol) and triethylamine (470 μl, 3.37 mmol) in THF (80 ml). Purification of the crude product by flash column chromatography (heptane:ethyl acetate, 1:1) provides the title compound (570 mg, 87% for two steps) as a brown oil.

MS (ESI+) m/z=235.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 1.17 (t, J=7.5 Hz, 3H), 2.17 (q, J=7.5 Hz, 2H), 3.93 (m, 1H), 4.09 (dd, J=9.8, 5.9 Hz, 1H), 4.14 (dd, J=8.3, 6.0 Hz, 1H), 4.47 (t, J=9.3 Hz, 1H), 4.59 (t, J=8.6 Hz, 1H), 7.49 (d, J=8.7 Hz, 2H), 8.24 (d, J=8.7 Hz, 2H).

48.3 4-Isopropyl-N-[4-(1-propionyl-azetidin-3-yl)-phenyl]-benzenesulfonamide

Following the same procedure as described in 46.5, 1-[3-(4-nitro-phenyl)-azetidin-1-yl]-propan-1-one (480 mg, 2.04 mmol) in EtOH (20 ml) was treated with SnCl₂.2H₂O (2.25 g, 9.97 mmol) and half of the resulting aniline in CH₂Cl₂ (15 ml) was then treated with pyridine (140 μl, 1.71 mmol) and 4-isopropylbenzensulfonylchloride (230 μl, 1.28 mmol). Purification of the crude product by flash column chromatography (heptane:ethyl acetate, 1:1) provided the title compound (140 mg, 36% for two steps) as a pale yellow gum.

MS (ESI+) m/z=387.1 [M+H]⁺

48.4 4-Isopropyl-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzene sulfonamide

Following the same procedure as described in Example 46.6, 4-isopropyl-N-[4-(1-propionyl-azetidin-3-yl)-phenyl]-benzenesulfonamide (140 mg, 0.36 mmol) in THF (18 ml) was then treated with 1M BH₃.THF (3.6 ml). The crude material was chromatographed (ethyl acetate) to afford the title compound (90 mg, 67%) as a pale yellow oil.

MS (ESI+) m/z=373.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) δ 0.93 (t, J=7.4 Hz, 3H), 1.24 (d, J=6.9 Hz, 6H), 1.38 (m, 2H), 2.41 (t, J=7.5 Hz, 2H), 2.94 (m, 1H), 3.03 (m, 2H), 3.67 (m, 3H), 7.01 (d, J=8.4 Hz, 2H), 7.16 (d, J=8.4 Hz, 2H), 7.28 (d, J=8.5 Hz, 2H), 7.68 (d, J=8.4 Hz, 2H).

Example 49 N-[4-(1-Propyl-azetidin-3-yl)-phenyl]-4-trifluoromethoxybenzene sulfonamide 49.1 N-[4-(1-Propionyl-azetidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide

Following the same procedure as described above, the second half of the resulting aniline from 48.3 was treated with pyridine (140 t, 1.71 mmol) and 4-(trifluoromethoxy)benzensulfonylchloride (215 μl, 1.26 mmol) in CH₂Cl₂ (15 ml). Purification of the crude product by flash column chromatography (heptane:ethyl acetate, 2:1) provided the title compound (170 mg, 40% for two steps) as a pale yellow gum.

MS (ESI+) m/z=429.0 [M+H]⁺

49.3 N-[4-(1-Propyl-azetidin-3-yl)-phenyl]-4-trifluoromethoxybenzene sulfonamide

Following the same procedure as described in Example 47.2, N-[4-(1-propionyl-azetidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide (170 mg, 0.39 mmol) in THF (20 ml) was then treated with 1M BH₃.THF (3.9 ml). The crude material was chromatographed (ethyl acetate) to afford the title compound (86 mg, 52%) as a pale yellow oil.

MS (ESI+) m/z=415.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.90 (t, J=7.4 Hz, 3H), 1.38 (m, 2H), 2.43 (t, J=7.5 Hz, 2H), 3.05 (m, 2H), 3.68 (m, 3H), 7.01 (d, J=8.4 Hz, 2H), 7.18 (d, J=8.4 Hz, 2H), 7.25 (d, J=8.5 Hz, 2H), 7.79 (d, J=8.8 Hz, 2H).

Example 50 4-Bromo-N-[2-(1-propyl-pyrrolidin-3-yl)-pyrimidin-5-yl]-benzenesulfonamide 50.1 5-Bromo-2-vinyl-pyrimidine

5-Bromo-2-iodo-pyrimidine (9.15 g, 32.11 mmol) was dissolved in THF (150 ml) and Pd(PPh₃)₄ (18.85 g, 1.60 mmol) was added, followed by tributyl-vinyl-stannane (9.38 ml, 32.11 mmol). The resulting mixture was heated at 140° C. for 20 min under microwave irradiations, next filtered through a pad of celite and concentrated. The crude material was diluted with CH₂Cl₂ and washed with water. Separation of the layers, drying (Na₂SO₄) of the organic phase, filtration and evaporation in vacuo provided the crude material, which was purified by flash column chromatography (CH₂Cl₂) to give the title compound (4.05 g, 68%) as a volatile yellow oil crystallizing at 4° C.

¹H NMR (400 MHz, CDCl₃): δ (ppm) 5.77 (dd, J=10.5, 1.4 Hz, 1H), 6.62 (dd, J=17.3, 1.4 Hz, 1H), 6.83 (dd, J=17.3, 10.5 Hz, 1H).

50.2 5-Bromo-2-(1-propyl-pyrrolidin-3-yl)-pyrimidine

Methoxymethyl-propyl-trimethylsilanylmethyl-amine (14.13 g, 74.61 mmol) in CH₂Cl₂ (4 ml) was added dropwise to a 0° C. cooled solution of 5-bromo-2-vinyl-pyrimidine (2 g, 10.80 mmol) and TFA (210 μl, 2.72 mmol) in CH₂Cl₂ (45 ml) over a period of 20 min. The reaction mixture was then stirred at room temperature for 2 h. The crude material was diluted with CH₂Cl₂, washed with saturated aqueous NaHCO₃ and the organic layer was dried over Na₂SO₄ and evaporated. The residue was chromatographed on silica gel (CH₂Cl₂:methanol, 97:3) to afford the title compound (1.03 g, 34%) as a brown oil.

MS (ESI+) m/z=271.9 [M+H]⁺

50.3 2-(1-Propyl-pyrrolidin-3-yl)-pyrimidin-5-ylamine

A dry flask was charged with 5-bromo-2-(1-propyl-pyrrolidin-3-yl)-pyrimidine (300 mg, 1.11 mmol), Pd₂(dba)₃ (tris(dibenzylideneacetonate) dipalladium (30 mg, 0.032 mmol)), rac-BINAP (2,2′-bis(diphenylphosphino)-1,1′-binaphthyl) (35 mg, 0.056 mmol), tBuONa (150 mg, 1.56 mmol), benzophenone imine (300 mg, 1.65 mmol) and toluene (4 ml). It was then evacuated, flushed with nitrogen and the mixture heated at 80° C. under microwave irradiations for 3 h. After filtration through a pad of celite, the solvent was removed under reduced pressure. The crude material was then dissolved in THF (10 ml) and 1 N aqueous HCl (3 ml) was added. The solution was stirred at room temperature for 45 min and the organic solvent was next removed under vacuo. The resulting aqueous phase was adjusted to pH˜9 with 2 N NaOH solution, washed with heptane:ethyl acetate, 2:1 (50 ml) and concentrated to give the crude amine.

MS (ESI+) m/z=207.1 [M+H]⁺

50.4 4-Bromo-N-[2-(1-propyl-pyrrolidin-3-yl)-pyrimidin-5-yl]-benzenesulfonamide

The crude 2-(1-propyl-pyrrolidin-3-yl)-pyrimidin-5-ylamine (about 1.11 mmol) was dissolved in CH₂Cl₂:pyridine, 9:1 (50 ml) and 4-bromobenzenesulfonyl chloride (566 mg, 2.21 mmol) was added. After stirring at room temperature overnight, the reaction mixture was filtered and concentrated. The raw material was then dissolved in a solution of EtONa (400 mg, 5.87 mmol) in EtOH (35 ml) and the resulting solution was heated under reflux for 1 h. Silica gel (1 g) was next added to the mixture and the solvent removed under reduced pressure. Following flash column chromatography (CH₂Cl₂:methanol, 9:1) provides the title compound (100 mg, 21% for four steps) as a yellow gum.

MS (ESI+) m/z=426.9 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): rotamers δ (ppm) 0.99 (t, J=7.3 Hz, 3H), 1.84 (m, 2H), 2.33 (m, 1H), 2.53 (m, 1H), 3.05 (m, 1H), 3.17 (m, 1H), 3.46 (t, J=6.0 Hz, 2H), 3.70 (m, 2H), 3.86 (m, 1H), 5.67 (bs, 1H), 7.53 (d, J=8.4 Hz, 2H), 7.70-7.75 (2d, J=8.4 Hz, 2H), 8.44 (s, 2H).

Example 51 N-[2-(1-Propyl-pyrrolidin-3-yl)-pyrimidin-5-yl]-4-trifluoromethoxy-benzenesulfonamide

Following the same procedure as described in Example 50.4, a crude 2-(1-propyl-pyrrolidin-3-yl)-pyrimidin-5-ylamine (about 0.74 mmol) obtained via the above mentioned protocol was treated with 4-(trifluoromethoxy)benzenesulfonyl chloride (250 μl, 1.47 mmol) in CH₂Cl₂:pyridine, 9:1 (50 ml). Subsequent treatment with EtONa/EtOH and purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 9:1) provided the title compound (44 mg, 14% for four steps) as a yellow gum.

MS (ESI+) m/z=431.0 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): rotamers δ (ppm) 0.98 (t, J=7.3 Hz, 3H), 1.84 (m, 2H), 2.30 (m, 1H), 2.58 (m, 1H), 3.14 (m, 2H), 3.31 (m, 1H), 3.64 (m, 2H), 3.92 (m, 2H), 7.24 (m, 2H), 7.93-7.97 (2d, J=8.6 Hz, 2H), 8.44 (s, 2H).

Example 52 4-Isopropyl-N-[2-(1-propyl-pyrrolidin-3-yl)-pyrimidin-5-yl]-benzenesulfonamide

Following the same procedure as described in Example 50.4, a crude 2-(1-propyl-pyrrolidin-3-yl)-pyrimidin-5-ylamine (about 0.13 mmol) obtained via the above mentioned protocol was treated with 4-isopropylbenzensulfonyl chloride (56 μl, 0.31 mmol) in CH₂Cl₂:pyridine, 9:1 (50 ml). Subsequent treatment with EtONa/EtOH and purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 85:15) provided the title compound (26 mg, 50% for four steps) as a yellow gum.

MS (ESI+) m/z=389.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): rotamers δ (ppm) 0.96 (t, J=7.4 Hz, 3H), 1.21-1.23 (2d, J=6.9 Hz, 6H), 1.80 (m, 2H), 2.26 (m, 1H), 2.52 (m, 1H), 2.90 (m, 1H), 3.07 (m, 2H), 3.24 (m, 1H), 3.55 (m, 2H), 3.85 (m, 2H), 6.34 (bs, 1H), 7.25 (m, 2H), 7.76-7.81 (2d, J=8.2 Hz, 2H), 8.54 (s, 2H).

Example 53 N-{4-[(S)-1-(3-Hydroxy-propyl)-pyrrolidin-3-yl]-phenyl}-4-isopropyl-benzenesulfonamide 53.1 Acetic acid 3-{(S)-3-[4-(4-isopropyl-benzenesulfonylamino)-phenyl]-pyrrolidin-1-yl}-propyl ester

0.21 g of 4-isopropyl-N-[4-((S)-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (0.62 mmol) were dissolved in 5 ml dimethylformamide. 0.0019 mg of sodium iodide (0.01 mmol) and 0.13 ml of triethylamine (0.94 mmol) were added, followed by addition of 0.136 mg of 3-acetoxy-1-bromo-propane (0.75 mmol). Stirring continued for 15 h at room temperature before the reaction mixture was poured onto 50 ml of crushed ice. The aqueous layer was extracted three times with ethyl acetate and the combined organic phases washed with water and saturated sodium chloride solution. The ethyl acetate phase was dried over magnesium sulfate, filtered, and evaporated to dryness under reduced pressure to yield 0.26 g of the crude product.

ESI-MS: 445.1 [M+H]⁺

53.2 N-{4-[(S)-1-(3-Hydroxy-propyl)-pyrrolidin-3-yl]-phenyl}-4-isopropyl-benzenesulfonamide

0.26 g of acetic acid 3-{(S)-3-[4-(4-isopropyl-benzenesulfonylamino)-phenyl]-pyrrolidin-1-yl}-propyl ester (0.58 mmol) were dissolved in 4 ml of tetrahydrofuran. 0.021 g lithium hydroxide (0.88 mmol) dissolved in 4 ml water were added and the reaction mixture stirred for 15 h at room temperature. An additional equivalent of lithium hydroxide was added and stirring continued for 24 h before the reaction mixture was diluted with water and extracted three times with ethyl acetate. The combined organic phases were dried over magnesium sulfate, filtered, and evaporated to dryness under reduced pressure to yield 0.157 g of the product.

ESI-MS: 403.3 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.7 (d, 2H), 7.25 (m, 2H), 7.1 (d, 2H), 6.95 (d, 2H), 3.8 (m, 2H), 3.3 (m, 1H), 3.05 (m, 1H), 2.95 (m, 1H), 2.7-2.9 (m, 4H), 2.55 (m, 1H), 2.25 (m, 1H), 1.7-1.85 (m, 2H), 1.15-1.3 (broad, 7H).

Example 54 4-Cyclobutyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

The title compound was prepared in an analogous manner to that described for Example 37.

ESI-MS: 399.1 [M+H]⁺

Example 55 4-Oxazol-5-yl-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzenesulfonamide 55.1 4-(1-Propyl-azetidin-3-yl)-phenylamine

1-(3-(4-Nitrophenyl)azetidin-1-yl)propan-1-one (3.16 g, 13.49 mmol) was dissolved in ethanol (200 ml) and SnCl₂.2H₂O (15.20 g, 67.45 mmol) was added. The resulting mixture was refluxed for 8 h and then the solvent was removed under vacuum. The raw material was dissolved in ethyl acetate and washed successively with 2N aqueous NaOH (×2) and water. The organic layer was dried (Na₂SO₄), filtered through a pad of celite and evaporated. The crude 1-[3-(4-amino-phenyl)-azetidin-1-yl]-propan-1-one was then dissolved in tetrahydrofuran (THF) (200 ml) and 1M LiAlH₄ in tetrahydrofuran (19.5 ml, 19.5 mmol) was added dropwise at 0° C. After stirring at room temperature for 2 h, the reaction mixture was carefully quenched with THF/H₂O 9:1 (20 ml) at 0° C., then filtered through a pad of celite and the solvents were removed under reduced pressure. The crude 4-(1-propyl-azetidin-3-yl)-phenylamine was used without any further purification for the next step.

MS (ESI+) m/z=191.1 [M+H]⁺

55.2 4-Oxazol-5-yl-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzenesulfonamide

The crude 4-(1-propyl-azetidin-3-yl)-phenylamine (40 mg, 0.21 mmol) was dissolved in CH₂Cl₂/pyridine 9:1 (10 ml) and 4-oxazol-5-yl-benzenesulfonyl chloride (51 mg, 0.21 mmol) was added. After stirring at room temperature for 2 h, the reaction mixture was diluted with CH₂Cl₂ and washed successively with 1 N aqueous HCl, saturated aqueous NaHCO₃ and water. The organic layer was dried over Na₂SO₄ and evaporated. The residue was chromatographed on silica gel (CH₂Cl₂:methanol, 95:5) to afford the title compound (30 mg, 36%) as a white amorphous solid.

MS (ESI+) m/z=398.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 1.02 (t, J=7.4 Hz, 3H), 1.75 (m, 2H), 3.08 (m, 2H), 3.72 (m, 2H), 4.24 (m, 1H), 4.62 (m, 2H), 7.10 (m, 2H), 7.22 (d, J=7.9 Hz, 2H), 7.45 (s, 1H), 7.69 (d, J=8.4 Hz, 2H), 7.89 (d, J=8.3 Hz, 2H), 7.95 (s, 1H).

Example 56 4-(2-Fluoro-ethyl)-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (100 mg, 0.52 mmol) in CH₂Cl₂/pyridine 9:1 (12 ml) was treated with 4-(2-fluoro-ethyl)-benzenesulfonyl chloride (117 mg, 0.52 mmol). Purification of the crude product by chromatography on reversed phase silica gel (H₂O+0.1% acetic acid:CH₃CN+0.1% acetic acid, 75:25) provided the title compound (11 mg, 6%) as a colourless gum.

MS (ESI+) m/z=377.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.97 (t, J=7.4 Hz, 3H), 1.59 (m, 2H), 2.89 (m, 2H), 3.00 (t, J=6.0 Hz, 1H), 3.06 (t, J=6.0 Hz, 1H), 3.76 (m, 2H), 4.05 (m, 1H), 4.29 (m, 2H), 4.57 (t, J=6.0 Hz, 1H), 4.69 (t, J=6.0 Hz, 1H), 7.08 (d, J=8.5 Hz, 2H), 7.12 (d, J=8.5 Hz, 2H), 7.32 (d, J=8.2 Hz, 2H), 7.71 (d, J=8.2 Hz, 2H).

Example 57 4-(3-Fluoro-propyl)-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (100 mg, 0.52 mmol) in CH₂Cl₂/pyridine 1:1 (12 ml) was treated with 4-(3-fluoro-propyl)-benzenesulfonyl chloride (161 mg, 0.68 mmol). Purification of the crude product by chromatography on reversed phase silica gel (H₂O+0.1% acetic acid:CH₃CN+0.1% acetic acid, 75:25) provided the title compound (40 mg, 20%) as a colourless gum.

MS (ESI+) m/z=391.3 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.96 (t, J=7.4 Hz, 3H), 1.66 (m, 2H), 1.97 (m, 2H), 2.76 (m, 2H), 3.08 (m, 1H), 3.25 (m, 1H), 3.73 (m, 2H), 4.21 (m, 1H), 4.34 (t, J=5.7 Hz, 1H), 4.46 (t, J=5.7 Hz, 1H), 4.66 (m, 2H), 7.04 (d, J=8.3 Hz, 2H), 7.12 (d, J=8.3 Hz, 2H), 7.25 (d, J=8.1 Hz, 2H), 7.70 (d, J=8.3 Hz, 2H), 8.17 (s, 1H).

Example 58 4-Bromo-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (1 g, 5.25 mmol) in CH₂Cl₂/pyridine 9:1 (50 ml) was treated with 4-bromobenzenesulfonyl chloride (1.34 g, 5.25 mmol). Purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 95:5) provided the title compound (1.1 g, 51%) as a colourless gum.

MS (ESI+) m/z=410.0 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.92 (t, J=7.4 Hz, 3H), 1.47 (m, 2H), 2.60 (m, 2H), 3.28 (m, 2H), 3.78 (m, 1H), 3.91 (m, 2H), 6.07 (bs, 1H), 7.07 (d, J=8.4 Hz, 2H), 7.13 (d, J=8.4 Hz, 2H), 7.53 (d, J=8.5 Hz, 2H), 7.64 (d, J=8.5 Hz, 2H).

Example 59 4-((R)-2-Fluoro-1-methyl-ethyl)-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (150 mg, 0.78 mmol) in CH₂Cl₂/pyridine 1:1 (12 ml) was treated with 4-((R)-2-fluoro-1-methyl-ethyl)-benzenesulfonyl chloride (242 mg, 1.02 mmol). Purification of the crude product by chromatography on reversed phase silica gel (H₂O+0.1% acetic acid:CH₃CN+0.1% acetic acid, 75:25) provided the title compound (15 mg, 5%) as a colourless gum.

MS (ESI+) m/z=391.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.93 (t, J=7.3 Hz, 3H), 1.27 (m, 3H), 1.60 (m, 2H), 2.99 (m, 2H), 3.13 (m, 1H), 3.86 (m, 2H), 4.10 (m, 1H), 4.42 (m, 5H), 4.36 (m, 1H), 4.49 (m, 1H), 7.07 (m, 4H), 7.27 (d, J=8.3 Hz, 2H), 7.74 (d, J=8.3 Hz, 2H).

Example 60 4-((S)-2-Fluoro-1-methyl-ethyl)-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (110 mg, 0.57 mmol) in CH₂Cl₂/pyridine 1:1 (12 ml) was treated with 4-((S)-2-fluoro-1-methyl-ethyl)-benzenesulfonyl chloride (178 mg, 0.75 mmol). Purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 95:5) provided the title compound (50 mg, 22%) as a gum.

MS (ESI+) m/z=391.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.93 (t, J=7.3 Hz, 3H), 1.27 (m, 3H), 1.60 (m, 2H), 2.92 (m, 2H), 3.15 (m, 1H), 3.73 (m, 2H), 4.06 (m, 1H), 4.32 (m, 2H), 4.36 (m, 1H), 4.49 (m, 1H), 7.07 (m, 4H), 7.28 (d, J=8.3 Hz, 2H), 7.74 (d, J=8.3 Hz, 2H).

Example 61 N-[4-(1-Propyl-azetidin-3-yl)-phenyl]-4-(3,3,3-trifluoro-propyl)-benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (100 mg, 0.52 mmol) in CH₂Cl₂/pyridine 9:1 (12 ml) was treated with 4-(3,3,3-trifluoro-propyl)-benzenesulfonyl chloride (214 mg, 0.78 mmol). Purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 95:5) provided the title compound (26 mg, 11%) as a colourless gum.

MS (ESI+) m/z=427.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.99 (t, J=7.4 Hz, 3H), 1.73 (m, 2H), 2.36 (m, 2H), 2.87 (m, 2H), 3.10 (m, 2H), 3.70-4.20 (m, 5H), 7.15 (m, 4H), 7.24 (d, J=8.5 Hz, 2H), 7.79 (d, J=8.3 Hz, 2H).

Example 62 N-[4-(1-Propyl-azetidin-3-yl)-phenyl]-4-(2,2,2-trifluoro-ethyl)-benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (100 mg, 0.52 mmol) in CH₂Cl₂/pyridine 9:1 (10 ml) was treated with 4-(3,3,3-trifluoro-ethyl)-benzenesulfonyl chloride (163 mg, 0.63 mmol). Purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 95:5) provided the title compound (65 mg, 30%) as a colourless gum.

MS (ESI+) m/z=413.1 [M+H]⁺

¹H NMR (400 MHz, CDCl₃): δ (ppm) 0.98 (t, J=7.4 Hz, 3H), 1.71 (m, 2H), 3.09 (m, 2H), 3.38 (m, 2H), 3.66-4.75 (m, 5H), 7.13 (m, 4H), 7.33 (d, J=8.0 Hz, 2H), 7.83 (d, J=8.1 Hz, 2H).

Example 63 N-[4-(1-Propyl-azetidin-3-yl)-phenyl]-4-(2,2,2-trifluoro-1-methyl-ethyl)benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (100 mg, 0.52 mmol) in CH₂Cl₂/pyridine 9:1 (15 ml) was treated with 4-(2,2,2-trifluoro-1-methyl-ethyl)-benzenesulfonyl chloride (145 mg, 0.52 mmol). Purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 95:5) provided the title compound (40 mg, 18%) as a pale yellow gum.

MS (ESI+) m/z=427.1 [M+H]⁺

¹H-NMR (400 MHz, CDCl₃): δ (ppm) 0.98 (t, J=7.4 Hz, 3H), 1.49 (d, J=7.2 Hz, 3H), 1.68 (m, 2H), 3.02-3.21 (m, 2H), 3.47 (m, 1H), 3.68-4.70 (m, 5H), 7.07 (d, J=8.6 Hz, 2H), 7.12 (d, J=8.5 Hz, 2H), 7.40 (d, J=8.2 Hz, 2H), 7.76 (d, J=8.3 Hz, 2H).

Example 64 4-(2,2-Difluoro-1-methyl-ethyl)-N-[4-(1-propyl-azetidin-3-yl)-phenyl]-benzenesulfonamide

Following the same procedure as described in example 55, 4-(1-propyl-azetidin-3-yl)phenylamine (150 mg, 0.78 mmol) in CH₂Cl₂/pyridine 1:1 (12 ml) was treated with 4-(2,2-difluoro-1-methyl-ethyl)-benzenesulfonyl chloride (321 mg, 1.26 mmol). Purification of the crude product by flash column chromatography (CH₂Cl₂:methanol, 95:5) provided the title compound (40 mg, 18%) as a colourless gum.

MS (ESI+) m/z=409.1 [M+H]⁺

¹H-NMR (400 MHz, CDCl₃): δ (ppm) 0.97 (t, J=7.4 Hz, 3H), 1.36 (m, 3H), 1.69 (m, 2H), 3.07 (m, 2H), 3.17 (m, 1H), 3.54-4.65 (m, 5H), 5.76 (td, J=3.5 Hz, 1H), 7.11 (m, 4H), 7.30 (d, J=8.1 Hz, 2H), 7.78 (d, J=8.3 Hz, 2H).

Example 65 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-[1,2,3]thiadiazol-4-yl-benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55. Yield: 75 mg (52%).

MS (ESI) m/z: 429.0 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 9.75 (s, 1H), 8.29 (d, 2H), 7.91 (d, 2H), 7.13 (d, 2H), 7.04 (d, 1H), 3.16 (m, 1H), 2.83 (m, 1H), 2.60 (t, 1H, J=7.3 Hz, 2H), 2.23 (m, 3H), 2.15 (m, 1H), 1.65 (m, 1H), 1.43 (m, 2H), 0.85 (t, J=7.3 Hz, 3H).

Example 66 N-[2-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-[1,2,3]thiadiazol-4-yl-benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55. Yield: 15 mg (10%)

MS (ESI) m/z: 429.0 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 9.73 (s, 1H), 8.30 (d, 2H), 7.88 (d, 2H), 7.12 (t, 1H), 6.98 (m, 3H), 3.16 (m, 1H), 2.81 (m, 1H), 2.60 (t, 1H, J=7.3 Hz, 2H), 2.23 (m, 3H), 2.14 (m, 1H), 1.58 (m, 1H), 1.39 (m, 2H), 0.82 (t, J=7.3 Hz, 3H).

Example 67 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-pyrrolidin-1-yl-benzenesulfonamide

Starting from 4-bromo-N[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]benzenesulfonamide obtained in example 25 and following a procedure in analogy to example 50; (pyrrolidine, BINAP, tert-NaOC₄H₉, Pd₂(dba)₃, 140° C. MW (microwave)) the title compound was obtained. Chromatography CH₂Cl₂-methanol 9:1. Yield: 36 mg (14%).

MS (ESI) m/z: 414.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 9.85 (br s, 1H), 7.50 (d, 2H), 7.11 (d, 2H), 7.00 (d, 2H), 6.51 (d, 2H), 3.30 (m, 6H), 2.91 (m, 2H), 2.63 (m, 3H), 2.19 (m, 1H), 1.87 (m, 4H), 1.73 (m, 1H), 1.51 (m, 2H), 0.85 (t, J=7.3 Hz, 3H).

Example 68 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-trifluoromethylsulfanyl-benzenesulfonamide

4-((S)-1-Propylpyrrolidin-3-yl)phenylamine (50 mg, 0.24 mmol) was dissolved in THF (5 ml) at −78° C. and potassium hexamethyldisilazide (146 mg, 0.73 mmol) added. The solution was stirred at −78° C. for 1 hour and then 4-(trifluoromethylthio)benzene-1-sulfonyl fluoride (64 mg, 0.24 mmol) was added and the solution was allowed to reach room temperature over night. The solvent was removed in vacuo and the residue partitioned between ethyl acetate and NaOH (2M). The organic extract was separated, dried (MgSO₄), filtered and concentrated to give the product (97 mg, yield 89%).

MS (ESI) m/z: 445.0 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 10.27 (br s, 1H), 7.87 (m, 2H), 7.68 (m, 2H), 7.19 (d, 2H), 7.03 (d, 2H), 3.30 (m, 2H), 3.16 (m, 2H), 2.82 (m, 3H), 2.26 (m, 1H), 1.82 (m, 1H), 1.53 (m, 2H), 0.88 (t, J=7.3 Hz, 3H).

Example 69 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-pyrazol-1-yl-benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55.2; 2 mg (34%) of the title compound were obtained.

MS (ESI) m/z: 411.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 8.30 (s, 1H), 7.84 (m, 4H), 7.72 (s, 1H), 7.19 (d, 2H), 7.08 (d, 2H), 6.52 (s, 1H), 3.50 (m, 2H), 3.30 (m, 2H), 2.96 (m, 2H), 2.38 (m, 1H), 2.02 (m, 1H), 1.68 (m, 2H), 0.96 (t, J=7.3 Hz, 3H).

Example 70 4-Oxazol-5-yl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55.2.148 mg (yield 84%) of the title compound were obtained.

MS (ESI) m/z: 412.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 8.28 (s, 1H), 7.79 (m, 4H), 7.62 (s, 1H), 7.20 (d, 2H), 7.13 (d, 2H), 3.69 (m, 1H), 3.53 (m, 1H), 3.47 (m, 2H), 3.12 (m, 3H), 2.38 (m, 1H), 2.10 (m, 1H), 1.75 (m, 2H), 0.99 (t, J=7.3 Hz, 3H).

Example 71 4-Oxazol-5-yl-N-[2-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55.2.11 mg (yield 6%) of the title compound were obtained.

MS (ESI) m/z: 412.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 8.29 (s, 1H), 7.82 (m, 4H), 7.66 (s, 1H), 7.21 (m, 1H), 7.06 (m, 3H), 3.61 (m, 1H), 3.50 (m, 1H), 3.37 (m, 2H), 3.03 (m, 3H), 2.38 (m, 1H), 2.05 (m, 1H), 1.69 (m, 2H), 0.99 (t, J=7.3 Hz, 3H).

Example 72 4-(2-Oxo-pyrrolidin-1-yl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55.2. 86 mg (yield 66%) of the title compound were obtained.

MS (ESI) m/z: 428.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.72 (m, 4H), 7.12 (d, 2H), 7.01 (d, 2H), 3.83 (t, 2H), 3.32 (m, 1H), 3.14 (m, 1H), 2.92 (m, 1H), 2.81 (m, 1H), 2.53 (m, 5H), 2.27 (m, 1H), 2.13 (m, 2H), 1.83 (m, 1H), 1.52 (m, 2H), 0.91 (t, J=7.3 Hz, 3H).

Example 73 4-Furan-2-yl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

Starting from 4-bromo-N[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]benzenesulfonamide obtained in example 25 and following a procedure in analogy to example 19 the title compound (92 mg (yield 76%)) was obtained.

MS (ESI) m/z: 412.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 7.73 (s, 4H), 7.61 (s, 1H), 7.19 (d, 2H), 7.12 (d, 2H), 6.91 (s, 1H), 6.52 (s, 1H), 3.95-3.40 (m, 5H), 3.32 (m, 1H), 3.20 (m, 2H), 2.15 (m, 1H), 1.74 (m, 2H), 0.99 (t, J=7.3 Hz, 3H).

Example 74 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-pyrrol-1-yl-benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55. 86 mg (yield 66%) of the title compound were obtained.

MS (ESI) m/z: 411.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 7.78 (d, 2H), 7.76 (s, 1H), 7.61 (d, 2H), 7.26 (s, 1H), 7.18 (d, 2H), 7.09 (d, 2H), 6.31 (s, 1H), 3.36 (m, 2H), 3.17 (m, 1H), 3.08 (m, 1H), 2.82 (m, 3H), 2.32 (m, 1H), 1.95 (m, 1H), 1.62 (m, 2H), 0.97 (t, J=7.4 Hz, 3H).

Example 75 4-Azetidin-1-yl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

The title compound was prepared in analogy to the procedure described in example 67. 9 mg (yield 11%) of the title compound were obtained.

MS (ESI) m/z: 400.2 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 7.50 (d, 2H), 7.12 (d, 2H), 7.03 (d, 2H), 6.31 (d, 2H), 3.89 (m, 4H), 3.49 (m, 2H), 3.26 (m, 2H), 2.92 (m, 3H), 2.33 (m, 3H), 2.02 (m, 1H), 1.68 (m, 2H), 0.97 (t, J=7.3 Hz, 3H).

Example 76 4-(2-Oxo-oxazolidin-3-yl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

The title compound was prepared in analogy to the procedure described in example 67. 7 mg (yield 10%) of the title compound were obtained.

MS (ESI) m/z: 430.2 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.74 (d, 2H), 7.68 (d, 2H), 7.14 (d, 2H), 7.07 (d, 2H), 4.50 (m, 2H), 4.10 (m, 2H), 3.50 (m, 4H), 2.96 (m, 3H), 2.37 (m, 1H), 2.01 (m, 1H), 1.68 (m, 2H), 0.98 (t, J=7.3 Hz, 3H).

Example 77 4-(2,2-Difluoro-1-methyl-ethyl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55.2. Purification by chromatography ethyl acetate-CH₂Cl₂ 1:1 gave 36 mg (yield 12%) of the title compound.

MS (ESI) m/z: 423.1 [M+H]⁺

¹H-NMR (CDCl₃): δ [ppm] 7.74 (d, 2H), 7.52 (d, 2H), 7.14 (d, 2H), 7.03 (d, 2H), 6.14 (m, 1H), 3.30 (m, 5H), 2.82 (m, 1H), 2.65 (t, 1H, J=7.3 Hz, 2H), 2.39 (m, 2H), 2.15 (m, 1H), 1.65 (m, 1H), 1.41 (m, 1H), 1.31 (d, 3H), 0.98 (t, J=7.3 Hz, 3H).

Example 78 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-(2,2,2-trifluoro-1-methyl-ethyl)benzenesulfonamide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55.2. 57 mg (yield 43%) of the title compound were obtained.

MS (ESI) m/z: 441.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 7.72 (d, 2H), 7.49 (d, 2H), 7.12 (d, 2H), 7.03 (d, 2H), 3.65 (m, 2H), 3.24 (m, 1H), 3.10 (m, 1H), 2.90 (m, 1H), 2.70 (m, 1H), 2.51 (m, 3H), 2.25 (m, 1H), 1.82 (m, 1H), 1.57 (m, 2H), 1.47 (d, 3H), 0.94 (t, J=7.3 Hz, 3H).

Example 79 Benzofuran-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 55.2. Chromatography (using ethyl acetate-methanol) 1-50% gave 52 mg (yield 24%) of the title compound.

MS (ESI) m/z: 385.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 10.50 (br s, 1H), 7.76 (d, 1H), 7.70 (d, 1H), 7.55 (m, 3H), 7.34 (m, 1H), 7.18 (d, 2H), 7.10 (d, 2H), 3.10 (m, 1H), 2.90 (m, 1H), 2.61 (m, 5H), 2.22 (m, 1H), 1.76 (m, 1H), 1.52 (m, 3H), 0.86 (t, J=7.3 Hz, 3H).

Example 80 5-Isoxazol-5-yl-thiophene-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

4-((S)-1-Propyl-pyrrolidin-3-yl)-phenylamine (100 mg, 0.49 mmol) was dissolved in tetrahydrofuran (5 ml). Subsequently, dimethylaminopyridine (24 mg, 0.20 mmol) and 5-(5-isoxazyl)thiophene-2-sulfonyl chloride (159 mg, 0.64 mmol) were added and the reaction mixture stirred overnight at room temperature. The solvent was evaporated under reduced pressure, the residue treated with water and ethyl acetate. The organic layer was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to give the crude product. The crude product was purified with silica gel chromatography with dichloromethane/methanol (100:0 to 96:4) as eluent, yielding the purified product (67 mg, 33%).

MS (ESI) m/z: 418.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 8.65 (s, 1H), 7.63 (d, 1H), 7.58 (d, 1H), 7.24 (d, 2H), 7.12 (m, 3H), 7.07 (s, 1H), 4.02 (m, 1H), 3.16 (d, 2H), 3.10 (m, 3H), 2.28 (m, 1H), 1.91 (m, 1H), 1.58 (m, 2H), 0.88 (t, J=7.3 Hz, 3H).

Example 81 5-Isoxazol-3-yl-thiophene-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 80. The title compound was obtained in an amount of 66 mg; yield 32%.

MS (ESI) m/z: 418.1 [M+H]⁺

¹H-NMR (DMSO-d₆): δ [ppm] 8.72 (s, 1H), 7.68 (d, 1H), 7.62 (d, 1H), 7.24 (d, 2H), 7.14 (m, 3H), 7.09 (s, 1H), 4.08 (m, 1H), 3.16 (d, 2H), 3.10 (m, 3H), 2.33 (m, 1H), 1.97 (m, 1H), 1.62 (m, 2H), 0.92 (t, J=7.3 Hz, 3H).

Example 82 5-Oxazol-5-yl-thiophene-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

Sulfonamide coupling was achieved by following a procedure analogous to that described in example 80; title compound was obtained in an amount of 110 mg (yield 54%).

MS (ESI) m/z: 418.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 8.70 (s, 1H), 7.68 (d, 1H), 7.62 (d, 1H), 7.36 (d, 2H), 7.14 (m, 3H), 7.09 (s, 1H), 4.05 (m, 1H), 3.18 (d, 2H), 3.04 (m, 3H), 2.32 (m, 1H), 1.93 (m, 1H), 1.59 (m, 2H), 0.91 (t, J=7.3 Hz, 3H).

Example 83 N-(4-Azetidin-3-yl-phenyl)-4-(2,2-difluoro-1-methyl-ethyl)-benzenesulfonamide

Step 1: Sulfonamide coupling using 4-(1,1-difluoropropan-2-yl)benzene-1-sulfonyl chloride, following a procedure in analogy to that used in example 55. 90 mg (29%) of the title compound were obtained.

MS (ESI) m/z: 467.1 [M+H]⁺

Step 2: boc deprotection, following a procedure in analogy to that used in example 46.4. 77 mg (100%) of the title compound were obtained.

MS (ESI) m/z: 367.1 [M+H]⁺

Example 84 4-Isopropyl-N-[4-((S)-1-ethyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

0.3 g of 4-Isopropyl-N-((S)-4-pyrrolidin-3-yl-phenyl)-benzenesulfonamide (0.87 mmol) were dissolved in 20 ml dichloromethane. After addition of 0.07 ml of acetic acid, 0.073 ml of acetaldehyde (1.31 mmol) and 0.277 g of sodium triacetoxyborohydride (1.31 mmol), the reaction mixture was stirred at room temperature for 30 minutes. The solvent was evaporated, the residue dissolved in water and the pH adjusted to pH 8-9 with aqueous sodium hydroxide solution. The aqueous phase was extracted three times with diethyl ether, the combined organic phases dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure. The crude product was purified via silica gel chromatography (chromabond column) with dichloromethane, dichloromethane/methanol 4% as eluent to yield 64 mg of the title compound.

ESI-MS: 373.25 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.3 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 6.1 (bs, 1H), 3.35 (m, 1H), 3.1 (m, 1H), 2.95 (m, 2H), 2.65 (m, 2H), 2.55 (m, 1H), 2.45 (m, 1H), 2.3 (m, 1H), 1.85 (m, 1H), 1.25 (d, 6H), 1.15 (t, 3H).

Example 85 4-Isopropyl-N-[4-((S)-1-methyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

4-Isopropyl-N-[4-((S)-1-methyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide was prepared as described for example 84, but using aqueous formaldehyde solution as source for the carbonyl reagent.

ESI-MS: 359.2 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.3 (d, 2H), 7.1 (d, 2H), 7.0 (d, 2H), 6.0 (s, broad, 1H), 3.3 (m, 1H), 3.0 (m, 1H), 2.95 (m, 1H), 2.85 (m, 1H), 2.7 (m, 1H), 2.5 (m, 1H), 2.4 (s, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.2 (m, 6H).

According to the examples described above, the examples 86 to 93 were prepared. The compounds are characterised by the following physical data.

Example 86 4-(2-Fluoro-ethyl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide, hydrochloride

ESI-MS: 391.4 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 11.35 (bs, 1H), 10.35 (m, 1H), 7.75 (d, 2H), 7.45 (d, 2H), 7.35 (m, 2H), 7.1 (m, 2H), 4.7 (m, 1H), 4.6 (m, 1H), 3.8-3.2 (m, 5H), 3.15-2.95 (m, 4H), 2.3 (m, 1H), 2.0 (m, 1H), 1.7 (m, 2H), 0.9 (t, 3H).

Example 87 4-((S)-2-Fluoro-1-methyl-ethyl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 405.15 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (d, 2H), 7.3 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 5.35 (bs, 1H), 4.5 (m, 1H), 4.4 (m, 1H), 3.3 (m, 1H), 3.15 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.65 (m, 1H), 2.5 (m, 1H), 2.45 (m, 2H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 1.3 (d, 3H), 0.9 (t, 3H).

Example 88 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-(3,3,3-trifluoro-propyl)-benzenesulfonamide

ESI-MS: 441.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (d, 2H), 7.25 (d, 2H), 7.1 (d, 2H), 7.0 (d, 2H), 5.7 (bs, 1H), 3.3 (m, 1H), 3.05 (m, 1H), 2.9 (m, 3H), 2.7 (m, 1H), 2.2-2.6 (several m, 6H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 89 5-Propyl-thiophene-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

ESI-MS: 393.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.3 (d, 1H), 7.2 (d, 2H), 7.05 (d, 2H), 6.65 (d, 1H), 3.35 (m, 1H), 3.1 (m, 1H), 2.9 (m, 1H), 2.75 (m, 3H), 2.5 (m, 3H), 2.3 (m, 1H), 1.85 (m, 1H), 1.5-1.7 (m, 4H), 0.9 (m, 6H).

Example 90 N-[4-((R)-1-Allyl-pyrrolidin-3-yl)-phenyl]-4-(2,2-difluoro-cyclopropyl)benzenesulfonamide

ESI-MS: 419.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.65 (d, 2H), 7.2 (d, 2H), 7.05 (d, 2H), 6.95 (d, 2H), 6.0 (bs, 1H), 5.8 (m, 1H), 5.15 (d, 1H), 5.05 (d, 1H), 3.25 (m, 1H), 3.1 (m, 2H), 2.95 (m, 1H), 2.8 (m, 1H), 2.7 (m, 1H), 2.6 (m, 1H), 2.4 (m, 1H), 2.2 (m, 1H), 1.8 (m, 1H), 1.7 (m, 1H), 1.55 (m, 1H).

Example 91 5-Methyl-pyridine-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

ESI-MS: 360.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.5 (s, 1H), 7.9 (bs, 1H), 7.8 (d, 1H), 7.6 (d, 1H), 7.15 (d, 2H), 7.1 (d, 2H), 3.25 (m, 1H), 3.0 (m, 1H), 2.85 (m, 1H), 2.6 (m, 1H), 2.5 (m, 1H), 2.4 (m, 2H), 2.4 (s, 3H), 2.2 (m, 1H), 1.75 (m, 1H), 1.5 (m, 2H), 0.9 (t, 3H).

Example 92 4-(3-Fluoro-propyl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 405.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.25 (d, 2H), 7.1 (d, 2H), 7.0 (d, 2H), 6.3 (bs, 1H), 4.4 (dt, 2H), 3.3 (m, 1H), 3.0 (m, 1H), 2.85 (m, 1H), 2.8 (m, 2H), 2.7 (m, 1H), 2.55 (m, 1H), 2.45 (m, 2H), 2.3 (m, 1H), 2.0 (m, 2H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 93 4-((R)-2-Fluoro-1-methyl-ethyl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 405.15 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (d, 2H), 7.3 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 5.5 (bs, 1H), 4.5 (m, 1H), 4.4 (m, 1H), 3.3 (m, 1H), 3.15 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.65 (m, 1H), 2.5 (m, 1H), 2.45 (m, 2H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 1.3 (d, 3H), 0.9 (t, 3H).

Example 94 N-[4-((S)-1-Cyclopropylmethyl-pyrrolidin-3-yl)-phenyl]-4-isopropyl-benzenesulfonamide

N-[4-((S)-1-Cyclopropylmethyl-pyrrolidin-3-yl)-phenyl]-4-isopropyl-benzenesulfonamide was prepared as described for 4-isopropyl-N-[4-((S)-1-ethyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide in example 84, but using cyclopropylcarbaldehyde as carbonyl reagent.

ESI-MS: 399.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.65 (d, 2H), 7.25 (d, 2H), 7.1 (d, 2H), 6.95 (d, 2H), 5.25 (s, 1H), 3.3 (m, 1H), 3.15 (m, 1H), 2.9 (m, 2H), 2.65 (m, 1H), 2.6 (m, 1H), 2.4 (m, 1H), 2.35 (m, 2H), 2.25 (m, 1H), 1.75 (m, 1H), 1.2 (d, 6H), 0.9 (m, 1H), 0.45 (d, 2H), 0.1 (d, 2H).

According to the examples described above, the examples 95 to 119 were prepared. The compounds are characterised by the following physical data.

Example 95 4-(2-Fluoro-1-fluoromethyl-ethyl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 423.15 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (d, 2H), 7.35 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 5.3 (s, 1H), 4.75 (d, 2H), 4.65 (d, 2H), 3.3 (m, 1H), 3.05 (m, 1H), 2.85 (m, 2H), 2.65 (m, 1H), 2.45 (m, 4H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 96 N-{4-[(S)-1-(2-Fluoro-ethyl)-pyrrolidin-3-yl]-phenyl}-4-isopropyl-benzenesulfonamide

ESI-MS: 391.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.3 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 4.63 (t, 1H), 4.5 (t, 1H), 3.3 (m, 1H), 3.1 (m, 1H), 2.7-3.0 (several m, 5H), 2.5 (m, 1H), 2.25 (m, 1H), 1.8 (m, 1H), 1.2 (d, 6H).

Example 97 4-Isopropyl-N-[4-((S)-1-propionyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 401.15 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.3 (m, 3H), 7.1 (m, 3H), 4.0 (m, 0.5H), 3.8 (m, 2H), 3.65 (m, 0.5H), 3.5 (m, 1H), 3.35 (m, 2H), 2.95 (sept, 1H), 2.8 (m, 3H), 1.95 (m, 1H), 1.2 (d, 6H), 1.15 (m, 3H).

Example 98 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-3-trifluoromethoxy-benzenesulfonamide

ESI-MS: 429.15 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 1H), 7.55 (s, 1H), 7.5 (t, 1H), 7.4 (d, 1H), 7.15 (d, 2H), 6.95 (d, 2H), 5.3 (bs, 1H), 3.3 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.65 (m, 1H), 2.5 (m, 1H), 2.45 (m, 2H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 99 N-[2-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-3-trifluoromethoxy-benzenesulfonamide

ESI-MS: 429.15 [M+H]⁺

Example 100 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-2-trifluoromethyl-benzenesulfonamide

ESI-MS: 413.15 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (d, 1H), 7.85 (d, 1H), 7.65 (t, 1H), 7.55 (t, 1H), 7.1 (d, 2H), 6.95 (d, 2H), 5.9 (bs, 1H), 3.3 (m, 1H), 3.0 (m, 1H), 2.8 (m, 1H), 2.6 (m, 1H), 2.45 (m, 1H), 2.4 (m, 2H), 2.25 (m, 1H), 1.75 (m, 1H), 1.55 (m, 2H), 0.95 (t, 3H).

Example 101 N-[4-((S)-1-Allyl-pyrrolidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide

ESI-MS: 427.1 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 11.3 (bd, 1H), 10.45 (m, 1H), 7.9 (d, 2H), 7.55 (d, 2H), 7.25 (m, 2H), 7.1 (d, 2H), 6.0 (m, 1H), 5.5 (m, 1H), 5.45 (m, 1H), 3.8 (m, 2H), 2.9-3.75 (several m, 5H), 2.3 (m, 1H), 1.95 (m, 1H).

Example 102 N-((S)-4-Pyrrolidin-3-yl-phenyl)-4-trifluoromethoxy-benzenesulfonamide

ESI-MS: 387.05 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 7.85 (d, 2H), 7.45 (d, 2H), 7.05 (d, 2H), 6.95 (d, 2H), 5.2 (m, 1H), 3.3 (m, 1H), 3.1 (m, 2H), 3.05 (m, 1H), 2.7 (m, 1H), 2.15 (m, 1H), 1.7 (m, 1H)

Example 103 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-(2,2,2-trifluoro-ethyl)benzenesulfonamide

ESI-MS: 427.2 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.8 (d, 2H), 7.4 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 5.7 (bs, 1H), 3.4 (m, 2H), 3.3 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.7 (m, 1H), 2.5 (m, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 104 N-[4-((S)-1-Ethyl-pyrrolidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide

ESI-MS: 415.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.8 (d, 2H), 7.25 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 4.9 (bs, 1H), 3.3 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.5-2.7 (several m, 3H), 2.45 (m, 1H), 2.3 (m, 1H), 1.8 (m, 1H), 1.15 (t, 3H).

Example 105 5-Chloro-thiophene-2-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-amide

ESI-MS: 385.0 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.25 (d, 1H), 7.2 (d, 2H), 7.0 (d, 2H), 6.8 (d, 1H), 5.1 (bs, 1H), 3.3 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.7 (m, 1H), 2.4-2.6 (several m, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 106 N-[4-((S)-1-Allyl-pyrrolidin-3-yl)-phenyl]-4-((S)-2-fluoro-1-methyl-ethyl)benzenesulfonamide

ESI-MS: 403.4 [M+H]⁺

Example 107 N-[4-((S)-1-Allyl-pyrrolidin-3-yl)-phenyl]-4-(3-fluoro-propyl)-benzene sulfonamide

ESI-MS: 403.15 [M+H]⁺

Example 108 4-(3-Fluoro-propyl)-N—((S)-4-pyrrolidin-3-yl-phenyl)-benzenesulfonamide

ESI-MS: 363.1 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.4 (d, 2H), 7.1 (d, 2H), 7.0 (d, 2H), 4.6 (bs), 4.5 (m, 1H), 4.35 (m, 1H), 3.15 (m, 1H), 3.0 (m, 2H), 2.9 (m, 1H), 2.7 (m, 2H), 2.6 (m, 1H), 2.05 (m, 1H), 1.95 (m, 1H), 1.9 (m, 1H), 1.6 (m, 1H).

Example 109 4-((S)-2-Fluoro-1-methyl-ethyl)-N-((S)-4-pyrrolidin-3-yl-phenyl)-benzenesulfonamide

ESI-MS: 363.05 [M+H]⁺

¹H-NMR (CH₃OH-d₄, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.4 (d, 2H), 7.1 (d, 2H), 7.0 (d, 2H), 4.5 (m, 1H), 4.4 (m, 1H), 2.95-3.35 (several m, 6H), 2.7 (m, 1H), 2.2 (m, 1H), 1.3 (d, 3H).

Example 110 4-((R)-2-Fluoro-1-methyl-ethyl)-N-((S)-4-pyrrolidin-3-yl-phenyl)-benzenesulfonamide

ESI-MS: 363.1 [M+H]⁺

¹H-NMR (acetic acid-d₄, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.4 (d, 2H), 7.2 (m, 4H), 4.55 (m, 1H), 4.45 (m, 1H), 3.8 (m, 1H), 3.65 (m, 1H), 3.5 (m, 2H), 3.2 (m, 2H), 2.4 (m, 1H), 2.05 (m, 1H), 1.3 (d, 3H).

Example 111 N-[4-((S)-1-Methyl-pyrrolidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide

ESI-MS: 401.1 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 7.9 (d, 2H), 7.55 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 3.2 (m, 1H), 2.8 (m, 1H), 2.6 (m, 2H), 2.3 (m, 1H), 2.25 (s, 3H), 2.15 (m, 1H), 1.65 (m, 1H).

Example 112 N-[4-((R)-1-Allyl-pyrrolidin-3-yl)-phenyl]-4-(2,2,2-trifluoro-1-methyl-ethyl)benzenesulfonamide

ESI-MS: 439.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ 7.8 (d, 2H), 7.4 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 5.9 (m, 1H), 5.2 (d, 1H), 5.1 (d, 1H), 3.45 (m, 1H), 3.3 (m, 1H), 3.2 (m, 2H), 3.1 (m, 1H), 2.9 (m, 1H), 2.7 (m, 1H), 2.5 (m, 1H), 2.3 (m, 1H), 1.8 (m, 1H), 1.5 (d, 3H).

Example 113 N-[4-((S)-1-Allyl-pyrrolidin-3-yl)-phenyl]-4-((R)-2-fluoro-1-methyl-ethyl)benzenesulfonamide

ESI-MS: 403.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (d, 2H), 7.3 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 5.9 (m, 1H), 5.2 (d, 1H), 5.1 (d, 1H), 4.5 (m, 1H), 4.4 (m, 1H), 3.3 (m, 1H), 3.1-3.2 (m, 3H), 3.0 (m, 1H), 2.8 (m, 1H), 2.65 (m, 1H), 2.4 (m, 1H), 2.25 (m, 1H), 1.8 (m, 1H), 1.3 (d, 3H).

Example 114 N-{4-[(S)-1-(3-Fluoro-propyl)-pyrrolidin-3-yl]-phenyl}-4-trifluoromethoxy-benzenesulfonamide

ESI-MS: 447.1 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.25 (bs, 1H), 7.85 (d, 2H), 7.55 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 4.55 (t, 1H), 4.4 (t, 1H), 3.2 (m, 1H), 2.85 (m, 1H), 2.6 (m, 2H), 2.5 (m, 2H), 2.35 (m, 1H), 2.15 (m, 1H), 1.8 (m, 1H), 1.75 (m, 1H), 1.65 (m, 1H).

Example 115 4-Methanesulfonyl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 423.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.95 (m, 4H), 7.1 (d, 2H), 7.0 (d, 2H), 6.2 (bs, 1H), 3.3 (m, 1H), 3.1 (m, 1H), 3.05 (s, 3H), 2.9 (m, 1H), 2.75 (m, 1H), 2.5 (m, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 116 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-ureido-benzenesulfonamide

ESI-MS: 403.1 [M+H]⁺

Example 117 4-Cyano-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 370.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.85 (d, 2H), 7.7 (d, 2H), 7.1 (d, 2H), 6.95 (d, 2H), 6.0 (bs, 1H), 3.3 (m, 1H), 3.1 (m, 1H), 2.85 (m, 1H), 2.75 (m, 1H), 2.5 (m, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 118 4-(1-Methyl-1H-pyrazol-4-yl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 425.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (s, 1H), 7.7 (d, 2H), 7.65 (s, 1H), 7.45 (d, 2H), 7.1 (d, 2H), 7.0 (d, 2H), 3.9 (s, 3H), 3.3 (m, 1H), 3.05 (m, 1H), 2.85 (m, 1H), 2.7 (m, 1H), 2.5 (m, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 0.9 (t, 3H).

Example 119 1-Ethyl-1H-pyrazole-4-sulfonic acid [4-((S)-1-propyl-pyrrolidin-3-yl)phenyl]-amide hydrochloride

ESI-MS: 363.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.65 (s, 1H), 7.6 (s, 1H), 7.15 (d, 2H), 7.0 (d, 2H), 4.25 (bs, 1H), 4.1 (q, 2H), 3.3 (m, 1H), 3.0 (m, 1H), 2.8 (m, 1H), 2.65 (m, 1H), 2.4-2.55 (m, 3H), 2.3 (m, 1H), 1.8 (m, 1H), 1.55 (m, 2H), 1.4 (t, 3H), 0.9 (t, 3H).

Example 120 4-Morpholin-4-yl-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

A solution of 0.07 g of rac-2,2′-bis(diphenylphosphino)-1,1′-binaphthalene (BINAP, 0.11 mmol) and 0.043 g tris(dibenzylideneacetone) dipalladium(0) (0.05 mmol) in 5 ml of tetrahydrofuran were added dropwise to a solution of 0.25 g of 4-bromo-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (from example 25 (0.59 mmol)), 0.078 ml morpholine (0.9 mmol), and 0.104 g of sodium tert.-butylate (1.08 mmol) in 20 ml tetrahydrofuran. The reaction mixture was refluxed for 5½ h, and, after additional addition of 0.04 ml of morpholine, for another 2 h. After evaporation, the residue was treated with water, extracted twice with diethyl ether and dichloromethane each, and the combined organic layers dried over magnesium sulfate, filtered, and the solvent evaporated. The thus obtained crude product was purified via silica gel chromatography using a gradient of dichloromethane/methanol 0-12%.

ESI-MS: 430.2 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 11.25 (d broad, 1H), 10.05 (m, 1H), 9.4 (bs, 1H), 7.6 (d, 2H), 7.25 (d, 1H), 7.2 (d, 1H), 7.05 (m, 2H), 7.0 (d, 2H), 3.8 (m, 2H), 3.5-3.8 (m, 5H), 3.2 (m, 4H), 3.0-3.1 (m, 4H), 2.3 (m, 1H), 1.9 (m, 1H), 1.7 (m, 2H), 0.9 (t, 3H).

According to the examples described above, the examples 121 to 132 were prepared. The compounds are characterised by the following physical data.

Example 121 4-Benzyloxy-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 451.1 [M+H]⁺

Example 122 4-Hydroxy-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 361.1 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.0 (bs, 1H), 7.55 (d, 2H), 7.1 (d, 2H), 7.0 (d, 2H), 6.85 (d, 2H), 3.15 (m, 1H), 2.85 (m, 1H), 2.6 (m, 2H), 2.3-2.45 (m, 3H), 2.15 (m, 1H), 1.65 (m, 1H), 1.4 (m, 2H), 0.85 (t, 3H).

Example 123 N-[4-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-vinyl-benzenesulfonamide

ESI-MS: 371.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.7 (d, 2H), 7.4 (d, 2H), 7.15 (d, 2H), 7.0 (d, 2H), 6.7 (q, 1H), 5.8 (d, 1H), 5.4 (d, 1H), 4.25 (bs, 1H), 3.3 (m, 1H), 3.0 (m, 1H), 2.8 (m, 1H), 2.6 (m, 1H), 2.35-2.5 (m, 3H), 2.25 (m, 1H), 1.8 (m, 1H), 1.5 (m, 2H), 0.9 (t, 3H).

Example 124 N-[2-((S)-1-Propyl-pyrrolidin-3-yl)-phenyl]-4-vinyl-benzenesulfonamide

ESI-MS: 371.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.75 (d, 2H), 7.4 (d, 2H), 7.05-7.2 (m, 3H), 6.95 (d, 1H), 6.65 (q, 1H), 5.8 (d, 1H), 5.35 (d, 1H), 5.0 (bs), 3.45 (m, 1H), 3.3 (m, 1H), 3.15 (m, 1H), 3.1 (m, 1H), 2.65-2.8 (m, 3H), 2.3 (m, 1H), 1.9 (m, 1H), 1.7 (m, 2H), 0.9 (t, 3H).

Example 125 4-Fluoro-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

ESI-MS: 363.1 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 11.25 (bd, 1H), 10.4 (m, 1H), 7.8 (m, 2H), 7.4 (m, 2H), 7.3 (d, 1H), 7.25 (d, 1H), 7.1 (m, 2H), 3.2-3.8 (m, 5H), 2.9-3.1 (m, 2H), 2.3 (m, 1H), 1.95 (m, 1H), 1.7 (m, 2H), 0.9 (t, 3H).

Example 126 3,4-Difluoro-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide hydrochloride

ESI-MS: 381.2 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 11.25 (bd, 1H), 10.55 (m, 1H), 7.85 (t, 1H), 7.65 (m, 2H), 7.3 (d, 1H), 7.25 (d, 1H), 7.1 (m, 2H), 3.2-3.8 (m, 5H), 2.9-3.15 (m, 2H), 2.3 (m, 1H), 1.95 (m, 1H), 1.7 (m, 2H), 0.9 (t, 3H).

Example 127 4-(3,3-Difluoro-pyrrolidin-1-yl)-N-[4-((S)-1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide

ESI-MS: 450.1 [M+H]⁺

Example 128 N-[4-(1-Benzyl-pyrrolidin-3-yl)-3-fluoro-phenyl]-4-isopropyl-benzenesulfonamide 128.1 2-Fluoro-4-nitro-1-vinyl-benzene

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.0 (m, 1H), 7.95 (m, 1H), 7.65 (m, 1H), 6.9 (dd 1H), 6.0 (m, 1H), 5.6 (m, 1H).

128.2 1-Benzyl-3-(2-fluoro-4-nitro-phenyl)-pyrrolidine

ESI-MS: 301.1 [M+H]⁺

128.3 1-Benzyl-3-(2-fluoro-4-amino-phenyl)-pyrrolidine

ESI-MS: 271.1 [M+H]⁺

128.4 N-[4-(1-Benzyl-pyrrolidin-3-yl)-3-fluoro-phenyl]-4-isopropyl-benzenesulfonamide

ESI-MS: 453.15 [M+H]⁺

According to the examples described above, the examples 129 to 131 were prepared. The compounds are characterised by the following physical data.

Example 129 N-(3-Fluoro-4-pyrrolidin-3-yl-phenyl)-4-isopropyl-benzenesulfonamide

ESI-MS: 363.15 [M+H]⁺

Example 130 N-[3-Fluoro-4-(1-propyl-pyrrolidin-3-yl)-phenyl]-4-isopropyl-benzenesulfonamide, hydrochloride

ESI-MS: 405.15 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 11.2 (bs, 1H), 10.65 (m, 1H), 7.75 (d, 2H), 7.45 (m, 3H), 6.95 (m, 2H), 3.85-3.2 (m, 4H), 3.15-2.9 (m, 4H), 2.3 (m, 1H), 2.05 (m, 1H), 1.7 (m, 2H), 1.2 (d, 6H), 0.9 (t, 3H).

Example 131 (−)-N-[6-(1-Propyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide

The racemic compound, N-[6-(1-propyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide, was subjected to a chiral chromatography on a preparative CHIRACEL AD column using n-hexane/ethanol/triethylamine (85:15:1) as eluent. Fractions containing only the desired enantiomer are analysed by analytical chiral HPLC and were combined.

ESI-MS: 388.1 [M+H]⁺

[α]_(D): −18.1°

Example 132 (+)-N-[6-(1-Propyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide, hydrochloride

The racemic compound, N-[6-(1-propyl-pyrrolidin-3-yl)-pyridin-3-yl]-4-isopropyl-benzene-sulfonamide, was subjected to a chiral chromatography on a preparative CHIRACEL AD column using n-hexane/ethanol/triethylamine (85:15:1) as eluent. Fractions containing only the desired enantiomer are analysed by analytical chiral HPLC and were combined.

ESI-MS: 388.1 [M+H]⁺

[α]_(D): +17.2°

Example 133 N-[4-((S)-1-Propyl-piperidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide 133.1 (S)-3-Phenyl-1-propyl-piperidine

1 g (6.2 mmol) of commercially available (S)-3-phenylpiperidine was dissolved in dichloromethane and 0.37 ml acetic acid (6.51 mmol). After addition of 0.5 ml of propanal (6.93 mmol) and 1.97 g of sodium triacetoxyborohydride (9.3 mmol), the reaction mixture was stirred at room temperature for 18 h. Water was added, the layers separated, and the aqueous phase extracted with dichloromethane. The combined organic layers were dried over magnesium sulfate, filtered, and evaporated to dryness to yield 1.1 g of (S)-3-phenyl-1-propyl-piperidine.

ESI-MS: 204.1 [M+H]⁺

133.2 (S)-3-(4-Nitro-phenyl)-1-propyl-piperidine

ESI-MS: 249.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 8.15 (d, 2H), 7.4 (d, 2H), 2.95 (m, 4H), 2.3 (m, 2H), 1.9-2.1 (m, 3H), 1.65-1.85 (m, 2H), 1.4-1.6 (m, 2H), 0.9 (t, 3H).

133.3 (S)-3-(4-Amino-phenyl)-1-propyl-piperidine

ESI-MS: 219.1 [M+H]⁺

133.4 N-[4-((S)-1-Propyl-piperidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide

Following a procedure analogous to that described in example 55.2 sulfonamide coupling was achieved

ESI-MS: 443.1 [M+H]⁺

¹H-NMR (CDCl₃, 400 MHz): δ [ppm] 7.8 (d, 2H), 7.2 (d, 2H), 7.1 (d, 2H), 7.0 (d, 2H), 6.7 (bs, 1H), 3.0 (m, 2H), 2.8 (m, 1H), 2.35 (m, 2H), 1.95 (m, 2H), 1.85 (m, 1H), 1.75 (m, 2H), 1.5 (m, 2H), 1.4 (m, 1H), 0.9 (t, 3H).

Example 134 N-[2-Fluoro-4-(1-propyl-pyrrolidin-3-yl)-phenyl]-4-isopropyl-benzenesulfonamide, hydrochloride 134.1 2-Fluoro-1-nitro-4-vinyl-benzene

4-Bromo-2-fluoro-1-nitro-benzene (691 mg, 3.14 mmol), tributyl-vinyl-stannane (1.2 g, 3.77 mmol), triphenylphospine (49 mg, 0.19 mmol) and tetrakistriphenylphosphinepalladium(0) (73 mg, 0.06 mmol) were dissolved in toluene (25 ml) and stirred for 5 hours at reflux. The reaction mixture was concentrated in vacuo. The residue was partitioned between water (25 ml) and diethyl ether (50 ml). The organic phase was separated, dried over MgSO₄, filtered and concentrated in vacuo to yield an oil (1.8 g). The residue was purified via silica gel chromatography with cyclohexane/ethyl acetate (gradient 0-5%). Fractions containing the product were combined and the solvent evaporated to give an oil (360 mg, 69%).

134.2 1-Benzyl-3-(3-fluoro-4-nitro-phenyl)-pyrrolidine

2-Fluoro-1-nitro-4-vinyl-benzene (360 mg, 2.15 mmol) was dissolved in dichloromethane (2 ml), trifluoroacetic acid (70 μl, 0.88 mmol) was added, followed by slow addition of N-benzyl-N-(methoxymethyl)-N-trimethylsilylmethylamine (633 mg, 2.67 mmol). Stirring was continued for 2 h at room temperature. Another portion of N-benzyl-N-(methoxymethyl)-N-trimethylsilylmethylamine (300 mg, 1.26 mmol) was added and stirring continued for another 30 minutes. The reaction mixture was diluted with ethyl acetate (25 ml), washed with aqueous NaHCO₃ (15 ml). The organic layer was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield an oil (900 mg). The crude product was purified via silica gel chromatography with cyclohexane/ethyl acetate (gradient 0-25%). Fractions containing the product were combined, the solvent evaporated to yield an oil (550 mg, 85%).

ESI-MS: 301.1 [M+H]⁺

134.3 4-(1-Benzyl-pyrrolidin-3-yl)-2-fluoro-phenylamine

1-Benzyl-3-(3-fluoro-4-nitro-phenyl)-pyrrolidine (550 mg, 1.83 mmol) was dissolved in methanol (30 ml), tin dichloride (3.125 g, 16.48 mmol) was added, and the reaction mixture stirred at reflux for 2 h. The methanol was evaporated, 1 N sodium hydroxide (60 ml) and ethyl acetate were added and stirring continued. The tin salts were filtered off, the organic phase was separated, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield an oil (400 mg).

ESI-MS: 271.1 [M+H]⁺

134.4 N-[4-(1-Benzyl-pyrrolidin-3-yl)-2-fluoro-phenyl]-4-isopropyl-benzenesulfonamide

4-(1-Benzyl-pyrrolidin-3-yl)-2-fluoro-phenylamine (400 mg, 1.48 mmol) and 4-isopropyl-phenylsulfonyl chloride (324 mg, 1.48 mmol) were dissolved in tetrahydrofuran (25 ml). Triethylamine (0.62 ml, 4.44 mmol) was added and the reaction mixture stirred over night at room temperature (10% conversion) and subsequently refluxed for 4 h (30% conversion). Small portions of 4-isopropyl-phenylsulfonyl chloride and triethylamine were added and the reaction mixture was stirred 15 min at 150° C. in the microwave (CEM). This procedure was repeated until complete conversion was observed. The solvent was evaporated under reduced pressure, the residue treated with ethyl acetate (50 ml) and extracted twice with slightly acidic water. The organic layer was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to give an oil (170 mg, 21%).

ESI-MS: 453.1 [M+H]⁺

134.5 N-(2-Fluoro-4-pyrrolidin-3-yl-phenyl)-4-isopropyl-benzenesulfonamide

A mixture of N-[4-(1-benzyl-pyrrolidin-3-yl)-2-fluoro-phenyl]-4-isopropyl-benzenesulfonamide (170 mg, 0.31 mmol) and 10% palladium on carbon (20 mg) in ethyl acetate (25 ml) and acetic acid (10 ml) was hydrogenated over night (20% conversion). The reaction mixture was irradiated with an infra-red lamp for 3 h (complete conversion). The catalyst was filtered, and the solvent was removed under vacuum to yield an oil (45 mg, 64% purity, 26%).

ESI-MS: 363.1 [M+H]⁺

134.6 N-[2-Fluoro-4-(1-propyl-pyrrolidin-3-yl)-phenyl]-4-isopropyl-benzenesulfonamide, hydrochloride

N-(2-Fluoro-4-pyrrolidin-3-yl-phenyl)-4-isopropyl-benzenesulfonamide (45 mg, 0.08 mmol) and propionaldehyde (4.7 mg, 0.08 mmol) were dissolved in tetrahydrofuran (5 ml). Acetic acid (10 μl, 0.12 mmol) and sodium trisacetoxyborohydride (34 mg, 0.16 mmol) were sequentially added to the reaction mixture and stirred for 30 minutes at room temperature. The reaction mixture was concentrated and the residue was dissolved in aqueous NaHCO₃ (10 ml) and extracted with diethyl ether (30 ml). The organic phase was separated, dried over magnesium sulfate, filtered, and evaporated to dryness to yield an oil (45 mg). The residue was dissolved in diethyl ether (25 ml) and HCl in ether was added and stirred overnight. The solvent was decanted and to the residue was added 3 ml of H₂O. This solution was lyophilisated to yield the pure product (32 mg, 91%).

ESI-MS: 405.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 7.7 (d, 2H), 7.4 (m, 3H), 7.0 (m, 2H), 3.4 (m, 2H), 3.2-2.9 (m, 4H), 2.8 (m, 2H), 2.4 (m, 1H), 2.0 (m, 1H), 1.6 (m, 2H), 1.2 (d, 6H), 1.0 (t, 3H).

Example 135 4-Isopropyl-N-(2-methoxy-4-pyrrolidin-3-yl-phenyl)-benzenesulfonamide, acetate 135.1 4-Bromo-2-methoxy-1-nitro-benzene

To a solution of 4-bromo-2-fluoro-1-nitro-benzene (2.0 g, 9.09 mmol) in methanol (50 ml) was added sodium methanolate (30% in methanol) (1.64 g, 9.09 mmol). The reaction mixture was stirred at room temperature overnight. The reaction mixture was concentrated and the residue was dissolved in water (30 ml) and extracted twice with ethyl acetate. The combined organic phases were washed with water. The organic phase was separated, dried over magnesium sulfate, filtered, and evaporated to dryness to yield a crystalline solid (2.1 g, 99%).

¹H-NMR (DMSO-d₆): δ [ppm] 7.9 (d, 1H), 7.6 (s, 1H), 7.3 (d, 1H), 4.0 (s, 3H).

135.2 2-Methoxy-1-nitro-4-vinyl-benzene

4-Bromo-2-methoxy-1-nitro-benzene (691 mg, 3.14 mmol), tributyl-vinyl-stannane (1.2 g, 3.77 mmol), triphenylphospine (49 mg, 0.19 mmol) and tetrakistriphenylphosphinepalladium(0) (73 mg, 0.06 mmol) were dissolved in toluene (25 ml) and stirred for 5 hours at reflux. The reaction mixture was concentrated in vacuo. The residue was partitioned between water (25 ml) and diethyl ether (50 ml). The organic phase was separated, dried over MgSO₄, filtered and concentrated in vacuo to yield an oil (2.0 g). The residue was purified via silica gel chromatography with cyclohexane/ethyl acetate (gradient 0-25%). Fractions containing the product were combined, the solvent evaporated to give an oil (435 mg, 72%).

135.3 1-Benzyl-3-(3-methoxy-4-nitro-phenyl)-pyrrolidine

2-Methoxy-1-nitro-4-vinyl-benzene (435 mg, 2.43 mmol) was dissolved in dichloromethane (2 ml), trifluoro acetic acid (80 μl, 1.0 mmol) was added, followed by slow addition of N-benzyl-N-(methoxymethyl)-N-trimethylsilylmethylamine (715 mg, 3.01 mmol). Stirring was continued for 2 h at room temperature. Another portion of N-benzyl-N-(methoxymethyl)-N-trimethylsilylmethylamine (300 mg, 1.26 mmol) was added and stirring continued for another 30 minutes. The reaction mixture was diluted with ethylacetate (25 ml), washed with aqueous NaHCO₃ (15 ml). The organic layer was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield an oil (970 mg). The crude product was purified via silica gel chromatography with cyclohexane/ethyl acetate (gradient 0-50%). Fractions containing the product were combined, the solvent evaporated to yield an oil (320 mg, 46%).

ESI-MS: 313.1 [M+H]⁺

135.4 4-(1-Benzyl-pyrrolidin-3-yl)-2-methoxy-phenylamine

1-Benzyl-3-(3-methoxy-4-nitro-phenyl)-pyrrolidine (350 mg, 1.12 mmol) was dissolved in methanol (20 ml), tin dichloride (1.912 g, 10.08 mmol) was added, and the reaction mixture stirred at reflux for 2 h. The methanol was evaporated, 1 N sodium hydroxide (50 ml) and ethyl acetate were added and stirring continued. The tin salts were filtered off, the organic phase was separated, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield an oil (220 mg, 70%).

ESI-MS: 283.1 [M+H]⁺

135.5 N-[4-(1-Benzyl-pyrrolidin-3-yl)-2-methoxy-phenyl]-4-isopropyl-benzenesulfonamide

4-(1-Benzyl-pyrrolidin-3-yl)-2-methoxy-phenylamine (220 mg, 0.78 mmol) and 4-isopropylphenylsulfonyl chloride (170 mg, 0.78 mmol) were dissolved in tetrahydrofuran (20 ml). Triethylamine (0.32 ml, 2.34 mmol) was added and the reaction mixture stirred over night at room temperature (10% conversion) and subsequently refluxed for 4 h (70% conversion). One small portion of 4-isopropylphenylsulfonyl chloride and triethylamine were added and the reaction mixture was stirred 15 min at 150° C. in the microwave (CEM). The solvent was evaporated under reduced pressure, the residue treated with ethyl acetate (50 ml) and extracted twice with slightly acidic water. The organic layer was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to give an oil (470 mg). The crude product was purified via silica gel chromatography with cyclohexane/ethyl acetate (gradient 0-100%). Fractions containing the product were combined, the solvent evaporated to yield an oil (143 mg, 40%).

ESI-MS: 465.1 [M+H]⁺

135.6 4-Isopropyl-N-(2-methoxy-4-pyrrolidin-3-yl-phenyl)-benzenesulfonamide, acetate

A mixture of N-[4-(1-benzyl-pyrrolidin-3-yl)-2-methoxy-phenyl]-4-isopropyl-benzenesulfonamide (143 mg, 0.31 mmol) and 10% palladium on carbon (20 mg) in ethyl acetate (20 ml) and acetic acid (20 ml) was hydrogenated for 4 h at room temperature. The catalyst was filtered, and the solvent was removed under vacuum to yield an oil (100 mg, 71%).

ESI-MS: 375.2 [M+H]⁺

¹H-NMR (D₂O): δ [ppm] 7.6 (d, 2H), 7.4 (d, 2H), 7.3 (d, 1H), 6.9 (d, 1H), 6.8 (s, 1H), 3.7 (m, 1H), 3.6-3.4 (m, 6H), 3.2 (m, 1H), 3.0 (m, 1H), 2.4 (m, 1H), 2.1 (m, 1H), 1.2 (d, 6H).

Example 136 4-Isopropyl-N-[2-methoxy-4-(1-propyl-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide, hydrochloride

4-Isopropyl-N-(2-methoxy-4-pyrrolidin-3-yl-phenyl)-benzenesulfonamide, acetate (40 mg, 0.09 mmol) and propionaldehyde (5.1 mg, 0.09 mmol) were dissolved in tetrahydrofuran (5 ml). Acetic acid (10 μl, 0.12 mmol) and sodium trisacetoxyborohydride (37 mg, 0.18 mmol) were sequentially added to the reaction mixture and stirred for 30 minutes at room temperature. The reaction mixture was concentrated and the residue was dissolved in aqueous NaHCO₃ (10 ml) and extracted with diethyl ether (30 ml). The organic phase was separated, dried over magnesium sulfate, filtered, and evaporated to dryness to yield an oil (30 mg). The residue was dissolved in diethyl ether (25 ml) and HCl in ether was added and stirred overnight. The solvent was decanted and to the residue was added 3 ml of H₂O. This solution was lyophilisated to yield the pure product (23 mg, 48%).

ESI-MS: 417.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 7.6 (d, 2H), 7.4 (d, 2H), 7.3 (d, 1H), 6.9 (d, 1H), 6.8 (s, 1H), 3.5 (m, 5H), 3.3-3.2 (m, 2H), 3.0-2.9 (m, 4H), 2.4 (m, 1H), 2.0 (m, 1H), 1.7 (m, 2H), 1.2 (d, 6H), 1.0 (t, 3H).

Example 137 N-[4-(1-Allyl-pyrrolidin-3-yl)-2-methoxy-phenyl]-4-isopropyl-benzenesulfonamide, hydrochloride

To 4-isopropyl-N-(2-Methoxy-4-pyrrolidin-3-yl-phenyl)-benzenesulfonamide, acetate (40 mg, 0.09 mmol) in N,N-dimethylformamide (5 ml) was added allyl bromide (8 μl, 0.1 mmol) and K₂CO₃ (36 mg, 0.26 mmol). The reaction mixture was stirred at room temperature for 2 h. The reaction mixture was diluted with water (35 ml) and extracted twice with diethyl ether (20 ml). The organic phase was separated, dried over magnesium sulfate, filtered, and evaporated to dryness to yield an oil (36 mg). The residue was dissolved in diethyl ether (25 ml) and HCl in ether was added and stirred overnight. The solvent was decanted and to the residue was added 3 ml H₂O. This solution was lyophilisated to yield the pure product (17 mg, 37%).

ESI-MS: 415.1 [M+H]⁺

¹H-NMR (CH₃OH-d₄): δ [ppm] 7.6 (d, 2H), 7.3 (m, 3H), 6.8 (d, 1H), 6.7 (s, 1H), 5.9 (m, 1H), 5.3 (d, 1H), 5.2 (d, 1H), 3.4 (s, 3H), 3.2 (m, 1H), 3.0-2.9 (m, 3H), 2.6 (m, 1H), 2.3 (m, 1H), 1.9 (m, 1H), 1.2 (d, 6H).

Example 138 4-Isopropyl-N-[4-(1-propyl-piperidin-3-yl)-phenyl]-benzenesulfonamide, hydrochloride 138.1 3-Phenyl-1-propyl-piperidine

3-Phenyl-piperidine (4.0 g, 24.81 mmol) and propionaldehyde (1.8 ml, 24.81 mmol) were dissolved in tetrahydrofuran (100 ml). Acetic acid (2.14 ml, 37.21 mmol) and sodium trisacetoxyborohydride (10.515 g, 49.61 mmol) were sequentially added to the reaction mixture and stirred for 1 hour at room temperature. The reaction mixture was concentrated and the residue was dissolved in aqueous NaHCO₃ solution (50 ml) and diethyl ether (100 ml). The organic phases was dried over magnesium sulfate, filtered, and evaporated to dryness to yield the crude product (4.6 g, 87% purity).

ESI-MS: 204.15 [M+H]⁺

138.2 3-(4-Nitro-phenyl)-1-propyl-piperidine

To ice cooled 3-phenyl-1-propyl-piperidine (4.6 g, 19.73 mmol) and KNO₃ (2.254 g, 22.29 mmol) was added concentrated H₂SO₄. The reaction mixture was allowed to warm to room temperature and stirred for another 30 minutes. To the reaction mixture was added cautiously ice and subsequently the pH was adjusted to 9-10. The aqueous phase was extracted several times with ethyl acetate. The organic phases was dried over magnesium sulfate, filtered, and evaporated to dryness to yield the crude product (5.2 g, 81% purity).

ESI-MS: 249.15 [M+H]⁺

138.3 4-(1-Propyl-piperidin-3-yl)-phenylamine

3-(4-Nitro-phenyl)-1-propyl-piperidine (5.2 g, 1.86 mmol) was dissolved in methanol (35 ml), tin dichloride (3.78 g, 16.74 mmol) was added, and the reaction mixture stirred at reflux for 2 h and overnight at room temperature. The methanol was evaporated, 1 N sodium hydroxide (50 ml) and ethyl acetate were added and stirring continued. The tin salts were filtered off, the organic phase was separated, dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to yield an the crude product (450 mg, 90% purity).

138.4 4-Isopropyl-N-[4-(1-propyl-piperidin-3-yl)-phenyl]-benzenesulfonamide, hydrochloride

4-(1-Propyl-piperidin-3-yl)-phenylamine (600 mg, 1.65 mmol) and 4-isopropyl-phenylsulfonyl chloride (397 mg, 1.81 mmol) were dissolved in tetrahydrofuran (25 ml). Triethylamine (760 μl, 5.44 mmol) was added and the reaction mixture stirred for 72 hours at room temperature. The solvent was evaporated under reduced pressure, the residue treated with diethyl ether (50 ml) and three times extracted with water (3×30 ml). The organic phase was treated with 1 molar HCl solution. The acidic aqueous solution was made alkaline with NaOH solution to pH 9-10 and then extracted with ethyl acetate (25 ml). The organic phase was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to give the crude product (580 mg). The crude product was purified via silica gel chromatography with ethyl acetate. Fractions containing the product were combined, the solvent evaporated to yield the pure product which was then converted into the hydrochloride salt via adding a solution of 1 N HCl in diethyl ether. The precipitate was filtered off and dried in vacuo to give the pure product (283 mg, 39%).

ESI-MS: 401.15 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.3 (s, 1H), 10.25 (bs, 1H), 7.7 (d, 2H), 7.45 (d, 2H), 7.15 (d, 2H), 7.1 (d, 2H), 3.45 (m, 1H), 3.35 (m, 1H), 3.1-2.8 (m, 6H), 1.9 (m, 2H), 1.85 (m, 1H), 1.75 (m, 2H), 1.55 (m, 1H), 1.2 (d, 6H), 0.9 (t, 3H).

Following a procedure analogous to example 138.4 the compounds of examples 139 to 142 were prepared. The compounds are characterised by the following physical data.

Example 139 N-[4-(1-Propyl-piperidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide, hydrochloride

ESI-MS: 443.15 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.5 (s, 1H), 10.15 (bs, 1H), 7.9 (d, 2H), 7.6 (d, 2H), 7.2 (d, 2H), 7.1 (d, 2H), 3.45 (m, 2H), 3.1-2.8 (m, 5H), 1.9 (m, 2H), 1.85 (m, 1H), 1.7 (m, 2H), 1.55 (m, 1H), 0.9 (t, 3H).

Example 140 4-Difluoromethoxy-N-[4-(1-propyl-piperidin-3-yl)-phenyl]-benzenesulfonamide, hydrochloride

ESI-MS: 425.15 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.4 (s, 1H), 10.15 (bs, 1H), 7.85 (d, 2H), 7.4 (t, J=70 Hz, 1H), 7.35 (d, 2H), 7.15 (d, 2H), 7.1 (d, 2H), 3.45 (m, 1H), 3.4 (m, 1H), 3.1-2.8 (m, 5H), 1.9 (m, 2H), 1.85 (m, 1H), 1.75 (m, 2H), 1.55 (m, 1H), 0.9 (t, 3H).

Example 141 N-[4-(1-Propyl-piperidin-3-yl)-phenyl]-4-(2,2,2-trifluoro-ethyl)-benzenesulfonamide, hydrochloride

ESI-MS: 441.15 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.4 (s, 1H), 10.2 (bs, 1H), 7.8 (d, 2H), 7.55 (d, 2H), 7.15 (d, 2H), 7.1 (d, 2H), 3.8 (q, 2H), 3.45 (m, 1H), 3.4 (m, 1H), 3.1-2.8 (m, 5H), 1.9 (m, 2H), 1.85 (m, 1H), 1.7 (m, 2H), 1.55 (m, 1H), 0.9 (t, 3H).

Example 142 4-(2,2-Difluoro-cyclopropyl)-N-[4-(1-propyl-piperidin-3-yl)-phenyl]-benzenesulfonamide, hydrochloride

ESI-MS: 435.15 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.35 (s, 1H), 10.15 (bs, 1H), 7.75 (d, 2H), 7.45 (d, 2H), 7.15 (d, 2H), 7.1 (d, 2H), 3.45 (m, 1H), 3.4 (m, 1H), 3.15-2.8 (m, 5H), 2.05 (m, 2H), 1.9 (m, 2H), 1.8 (m, 1H), 1.7 (m, 2H), 1.55 (m, 1H), 0.9 (t, 3H).

Example 143 N-(3-Piperidin-3-yl-phenyl)-4-trifluoromethoxy-benzenesulfonamide 143.1 3-[3-(4-Trifluoromethoxy-benzenesulfonylamino)-phenyl]-piperidine-1-carboxylic acid tert-butyl ester

3-(3-Amino-phenyl)-piperidine-1-carboxylic acid tert-butyl ester (500 mg, 1.81 mmol) and dimethylaminopyridine (30 mg, 0.25 mmol) were dissolved in tetrahydrofuran (40 ml). 4-Trifluoromethoxyphenylsulfonyl chloride (519 mg, 1.99 mmol) was added and the reaction mixture stirred for 2 hours at room temperature. Additional quantities of trifluoromethoxyphenylsulfonyl chloride was added until the 3-(3-amino-phenyl)piperidine-1-carboxylic acid tert-butyl ester was completely consumed to give the bis-sulfonylated product. The solvent was evaporated under reduced pressure, the residue treated with water (25 ml) and diethyl ether (50 ml). The organic phases was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure. In an inert atmosphere, the residue was dissolved in ethanol (30 ml) and small pieces of metallic sodium were added and the reaction mixture was stirred for 1 hour at room temperature. The solvent was evaporated under reduced pressure, the residue treated with water (25 ml) and diethyl ether (50 ml). The organic phases was dried over magnesium sulfate, filtered, and the solvent evaporated under reduced pressure to give the crude product (385 mg). The crude product was purified via silica gel chromatography with dichloromethane/methanol (gradient 100:0-97:3). Fractions containing the product were combined, the solvent evaporated to yield the pure product (340 mg, 36%).

ESI-MS: 445.05 [M+H—C(CH₃)₃]⁺

143.2 N-(3-Piperidin-3-yl-phenyl)-4-trifluoromethoxy-benzenesulfonamide

3-[3-(4-Trifluoromethoxy-benzenesulfonylamino)-phenyl]-piperidine-1-carboxylic acid tert-butyl ester (340 mg, 0.66 mmol) was dissolved in dichloromethane (30 ml). Trifluoroacetic acid (2 ml) was added and the reaction mixture was stirred at room temperature for 1 hour. The reaction mixture was evaporated to dryness. Aqueous NaHCO₃ solution (10 ml) was added and extracted twice with ethyl acetate (25 ml). The combined organic phases were dried over magnesium sulfate, filtered, and evaporated to dryness to yield the pure product (250 mg, 95% yield).

ESI-MS: 401.05 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 7.85 (d, 2H), 7.5 (d, 2H), 7.1 (t, 1H), 6.9 (d, 1H), 6.85 (m, 2H), 2.95 (m, 2H), 2.5 (m, 3H), 1.75 (m, 1H), 1.65 (m, 1H), 1.45 (m, 2H).

Example 144 4-Isopropyl-N-(3-piperidin-3-yl-phenyl)-benzenesulfonamide 144.1 3-[3-(4-Isopropyl-benzenesulfonylamino)-phenyl]-piperidine-1-carboxylic acid tert-butyl ester

The title compound was prepared similar to a procedure as described in example 143.1

ESI-MS: 403.15 [M+H—C(CH₃)₃]⁺

144.2 4-Isopropyl-N-(3-piperidin-3-yl-phenyl)-benzenesulfonamide

The title compound was prepared similar to a procedure as described in example 144.1

ESI-MS: 359.15 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 7.75 (d, 2H), 7.4 (d, 2H), 7.1 (t, 1H), 6.9 (d, 1H), 6.85 (m, 2H), 2.95 (m, 2H), 2.85 (m, 1H), 2.5-2.35 (m, 3H), 1.75 (m, 1H), 1.6 (m, 1H), 1.4 (m, 2H), 1.2 (d, 6H).

Example 145 N-[3-(1-Propyl-piperidin-3-yl)-phenyl]-4-trifluoromethoxy-benzenesulfonamide, hydrochloride

N-(3-Piperidin-3-yl-phenyl)-4-trifluoromethoxy-benzenesulfonamide (60 mg, 0.15 mmol) and propionaldehyde (11 μl, 0.15 mmol) were dissolved in tetrahydrofuran (10 ml). Acetic acid (14 mg, 0.22 mmol) and sodium trisacetoxyborohydride (64 mg, 0.30 mmol) were sequentially added to the reaction mixture and stirred for 1 hour at room temperature. The reaction mixture was concentrated and the residue was dissolved in aqueous NaHCO₃ solution (5 ml) and diethyl ether (25 ml). The organic phases were dried over magnesium sulfate, filtered, and evaporated to dryness to yield the crude product (62 mg). The crude product was purified via silica gel chromatography with dichloromethane/methanol (gradient 100:0-75:25). Fractions containing the product were combined, the solvent evaporated to yield the pure product (42 mg) which was converted into the hydrochloride salt (45 mg, 63%).

ESI-MS: 443.15 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.45 (s, 1H), 10.25 (bs, 1H), 7.9 (d, 2H), 7.55 (d, 2H), 7.25 (t, 1H), 7.0 (m, 3H), 3.45 (m, 1H), 3.35 (m, 1H), 3.1-2.85 (m, 6H), 1.9 (m, 2H), 1.75 (m, 3H), 1.55 (m, 1H), 0.9 (t, 3H).

Example 146 4-Isopropyl-N-[3-(1-propyl-piperidin-3-yl)-phenyl]-benzenesulfonamide, hydrochloride

The title compound was prepared in a procedure analogous to that described in example 145.

ESI-MS: 401.25 [M+H]⁺

¹H-NMR (DMSO-d₆, 400 MHz): δ [ppm] 10.3 (s, 1H), 10.15 (bs, 1H), 7.7 (d, 2H), 7.45 (d, 2H), 7.2 (t, 1H), 7.0 (m, 2H), 6.95 (d, 1H), 3.45 (m, 1H), 3.35 (m, 1H), 3.05-2.85 (m, 6H), 1.9 (m, 2H), 1.75 (m, 3H), 1.55 (m, 1H), 1.2 (d, 6H), 0.9 (t, 3H).

III. Examples of Galenic Administration Forms

A) Tablets

Tablets of the following composition are pressed on a tablet press in the customary manner:

40 mg of substance from Example 8

120 mg of corn starch

13.5 mg of gelatin

45 mg of lactose

2.25 mg of Aerosil® (chemically pure silicic acid in submicroscopically fine dispersion)

6.75 mg of potato starch (as a 6% paste)

B) Sugar-Coated Tablets

20 mg of substance from Example 8

60 mg of core composition

70 mg of saccharification composition

The core composition consists of 9 parts of corn starch, 3 parts of lactose and 1 part of 60:40 vinylpyrrolidone/vinyl acetate copolymer. The saccharification composition consists of 5 parts of cane sugar, 2 parts of corn starch, 2 parts of calcium carbonate and 1 part of talc. The sugar-coated tablets which had been prepared in this way are subsequently provided with a gastric juice-resistant coating.

IV. Biological Investigations

Receptor Binding Studies:

The substance to be tested was either dissolved in methanol/Chremophor® (BASF-AG) or in dimethyl sulfoxide and then diluted with water to the desired concentration.

Dopamine D₃ Receptor:

The assay mixture (0.250 ml) was composed of membranes derived from ˜10⁶ HEK-293 cells possessing stably expressed human dopamine D₃ receptors, 0.1 nM [¹²⁵I]-iodosulpride and incubation buffer (total binding) or, in addition, test substance (inhibition curve) or 1 μM spiperone (nonspecific binding). Each assay mixture was run in triplicate.

The incubation buffer contained 50 mM tris, 120 mM NaCl, 5 mM KCl, 2 mM CaCl₂, 2 mM MgCl₂ and 0.1% bovine serum albumin, 10 μM quinolone and 0.1% ascorbic acid (prepared fresh daily). The buffer was adjusted to pH 7.4 with HCl.

Dopamine D_(2L) Receptor:

The assay mixture (1 ml) was composed of membranes from ˜10⁶ HEK-293 cells possessing stably expressed human dopamine D_(2L) receptors (long isoform) and 0.01 nM [¹²⁵I] iodospiperone and incubation buffer (total binding) or, in addition, test substance (inhibition curve) or 1 μM haloperidol (nonspecific binding). Each assay mixture was run in triplicate.

The incubation buffer contained 50 mM tris, 120 mM NaCl, 5 mM KCl, 2 mM CaCl₂, 2 mM MgCl₂ and 0.1% bovine serum albumin. The buffer was adjusted to pH 7.4 with HCl.

Measurement and Analysis:

After having been incubated at 25° C. for 60 minutes, the assay mixtures were filtered through a Whatman GF/B glass fiber filter under vacuum using a cell collecting device. The filters were transferred to scintillation viols using a filter transfer system. After 4 ml of Ultima Gold® (Packard) have been added, the samples were shaken for one hour and the radioactivity was then counted in a Beta-Counter (Packard, Tricarb 2000 or 2200CA). The cpm values were converted into dpm using a standard quench series and the program belonging to the instrument.

The inhibition curves were analyzed by means of iterative nonlinear regression analysis using the Statistical Analysis System (SAS) which is similar to the “LIGAND” program described by Munson and Rodbard.

The results of the receptro binding studies are expressed as receptor binding constants K_(i)(D₂) and K_(i)(D₃), respectively, as herein before described, and given in table 6.

In these tests, the compounds according to the invention exhibit very good affinities for the D₃ receptor (<50 nM, or <10 nM, frequently <5 nM) and bind selectively to the D₃ receptor.

The results of the binding tests are given in table 6. TABLE 6 Example K_(i)(D3)* [nM] K_(i)(D2)* [nM] K_(i)(D2)*/K_(i)(D3)* 1 0.09 7.6 89 2 0.24 2.3 9 3 0.17 13.8 91 4 3.16 403 127 5 2.9 267 93 6 0.45 20.1 45 7 3.5 212 61 8 4.1 235 57 9 2.6 129 49 10 1.9 111 60 12 3.0 131 43 13 3.1 168 54 14 3.4 123 37 15 1.9 74 39 16 12.6 393 31 17 3.1 126 41 18 2.3 90 39 19 0.48 12.6 26 20 0.3 7.3 24 21 0.4 11 27 23 1.07 46.6 44 24 1.2 72 60 25 1.6 95 60 26 28.1 1278 46 27 0.23 7.1 30 28 3.3 133 41 29 0.67 27.3 41 30 0.28 11.7 42 31 10.8 257 24 33 0.17 5.47 33 34 5.1 174 34 35 0.3 7.4 24 37 0.15 3.25 22 38 0.29 6.3 21 40 0.46 18.2 40 41 0.44 13.5 30 46 49 1.830 37 48 2.1 137 65 49 46 1.808 39 53 0.41 5.85 14 54 0.32 8.73 27 55 7.11 1175 165 56 24.4 2661.2 109 57 7.18 880 123 58 39.80 2940.0 74 59 6.41 1525 238 60 7.63 7780 1019 61 21.3 — — 62 25.2 3545 141 63 5.75 647.21 113 64 2.10 344 164 65 6.79 197 29 67 0.35 3.88 11 68 3.00 142 47 69 2.51 90.3 36 70 0.84 37.3 44 71 4.79 52.3 11 72 35.1 473 13 73 0.61 6.73 11 74 0.69 10.5 15 75 0.63 12.2 19 77 1.33 50 37 78 1.40 41.9 30 79 13.5 1111 82 80 37.6 1095 29 81 31.3 1162.0 37 82 5.59 437 78 84 0.95 16.2 17 85 0.57 18.5 32 86 1.18 119 101 87 0.55 20.5 37 88 0.92 41 45 89 0.6 27 45 90 11 280 25 92 0.61 17.3 28 93 0.48 14.7 31 94 0.23 4.7 21 95 1.3 27.9 22 96 0.83 57.8 70 101 3.7 268 73 102 52 2714 52 103 1.2 45 38 104 8.3 352 43 105 6.1 309 51 107 0.42 45.8 108 108 11.2 203.8 18 109 7.4 257.9 35 110 6.6 895 135 111 16.4 723 44 112 10.3 1196 116 113 0.49 42.2 86 114 4.2 464 111 118 36.6 1169 32 120 2.0 174 86 121 3.7 163 44 122 43.9 1342 31 123 0.45 41 91 125 19.5 1305 67 126 34 1021 30 127 0.6 64.7 112 128 2.7 12.9 5 129 3.6 106.3 30 130 0.52 8.5 16 131 5.8 430 74 133 7.3 192.7 26 134 0.76 13 135 0.85 17 136 0.27 6 137 0.36 12 *Receptor binding constants obtained according to the assays as described herein before 

1. A compound of the formula (I)

wherein n is 0, 1 or 2; G is CH₂ or CHR³; R¹ is H, C₁-C₆-alkyl, C₁-C₆-alkyl substituted by C₃-C₆-cycloalkyl, C₁-C₆-hydroxyalkyl, fluorinated C₁-C₆-alkyl, C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl, C₃-C₆-alkenyl, fluorinated C₃-C₆-alkenyl, formyl, acetyl or propionyl; R², R³ and R⁴ are, independently of each other, H, methyl, fluoromethyl, difluoromethyl, or trifluoromethyl; A is phenylene, pyridylene, pyrimidylene, pyrazinylene, pyridazinylene or thiophenylene, which can be substituted by one or more substituents selected from halogen, methyl, methoxy and CF₃; E is NR⁵ or CH₂, wherein R⁵ is H or C₁-C₃-alkyl; Ar is a cyclic radical selected from the group consisting of phenyl, a 5- or 6-membered heteroaromatic radical comprising as ring members 1, 2 or 3 heteroatoms selected from N, O and S and a phenyl ring fused to a saturated or unsaturated 5- or 6-membered carbocyclic or heterocyclic ring, where the heterocyclic ring comprises as ring members 1, 2 or 3 heteroatoms selected from N, O and S and/or 1, 2 or 3 heteroatom-containing groups each independently selected from NR⁸, where R⁸ is H, C₁-C₄-alkyl, fluorinated C₁-C₄-alkyl, C₁-C₄-alkylcarbonyl or fluorinated C₁-C₄-alkylcarbonyl, and where the cyclic radical Ar may carry 1, 2 or 3 substituents R^(a); R^(a) is halogen, C₁-C₆-alkyl, fluorinated C₁-C₆-alkyl, C₁-C₆-hydroxyalkyl, C₁-C₆-alkoxy-C₁-C₆-alkyl, C₂-C₆-alkenyl, fluorinated C₂-C₆-alkenyl, C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl, C₁-C₆-alkoxy, C₁-C₆-hydroxyalkoxy, C₁-C₆-alkoxy-C₁-C₆-alkoxy, fluorinated C₁-C₆-alkoxy, C₁-C₆-alkylthio, fluorinated C₁-C₆-alkylthio, C₁-C₆-alkylsulfinyl, fluorinated C₁-C₆-alkylsulfinyl, C₁-C₆-alkylsulfonyl, fluorinated C₁-C₆-alkylsulfonyl, phenylsulfonyl, benzyloxy, phenoxy, where the phenyl radical in the 3 last-mentioned radicals may be unsubstituted or may carry 1 to 3 substituents selected from C₁-C₄-alkyl, fluorinated C₁-C₄-alkyl and halogen, CN, nitro, C₁-C₆-alkylcarbonyl, fluorinated C₁-C₆-alkylcarbonyl, C₁-C₆-alkylcarbonylamino, fluorinated C₁-C₆-alkylcarbonylamino, carboxy, NH—C(O)—NR⁶R⁷, NR⁶R⁷, NR⁶R⁷—C₁-C₆-alkylene, O—NR⁶R⁷, where R⁶ and R⁷ are, independently of each other, H, C₁-C₄-alkyl, fluorinated C₁-C₄-alkyl or C₁-C₄-alkoxy or may form, together with N, a 4-, 5- or 6-membered saturated or unsaturated ring, or is a saturated or unsaturated 3- to 7-membered heterocyclic ring comprising as ring members 1, 2, 3 or 4 heteroatoms selected from N, O and S and/or 1, 2 or 3 heteroatom-containing groups selected from NR⁹, where R⁹ has one of the meanings given for R⁸, SO, SO₂ and CO, and where the heterocyclic ring may carry 1, 2 or 3 substituents selected from hydroxy, halogen, C₁-C₆-alkyl, fluorinated C₁-C₆-alkyl and C₁-C₆-alkoxy; and physiologically tolerated acid addition salts thereof.
 2. A compound as claimed in claim 1,

wherein R¹ is H, C₁-C₆-alkyl which may be substituted by C₃-C₆-cycloalkyl, fluorinated C₁-C₆-alkyl, C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl, C₃-C₆-alkenyl, fluorinated C₃-C₆-alkenyl, formyl, acetyl or propionyl; and Ar is a cyclic radical selected from the group consisting of phenyl, a 5- or 6-membered heteroaromatic radical comprising as ring members 1, 2 or 3 heteroatoms selected from N, O and S and a phenyl ring fused to a saturated or unsaturated 5- or 6-membered carbocyclic or heterocyclic ring, where the heterocyclic ring comprises as ring members 1, 2 or 3 heteroatoms selected from N, O and S, and where the cyclic radical may carry 1, 2 or 3 substituents R^(a) selected from the group consisting of halogen, C₁-C₆-alkyl, fluorinated C₁-C₆-alkyl, C₃-C₆-cycloalkyl, fluorinated C₃-C₆-cycloalkyl, C₁-C₆-alkoxy, fluorinated C₁-C₆-alkoxy, CN, acetyl, carboxy, NR⁶R⁷, NR⁶R⁷—C₁-C₆-alkylene, where R⁶ and R⁷ are, independently of each other, H, C₁-C₄-alkyl or fluorinated C₁-C₄-alkyl or may form, together with N, a 4-, 5- or 6-membered saturated or unsaturated ring, and a saturated or unsaturated 5- or 6-membered heterocyclic ring comprising as ring members 1, 2 or 3 heteroatoms selected from N, O and S.
 3. The compound as claimed in claim 1, wherein n is 0 or
 1. 4. The compound as claimed in claim 1, wherein R¹ is hydrogen, methyl, ethyl, n-propyl, 2-fluoroethyl, 3-fluoropropyl, 3-hydroxypropyl, cyclopropylmethyl or allyl.
 5. The compound as claimed in claim 4, wherein R¹ is n-propyl or allyl.
 6. The compound as claimed in claim 1, wherein R², R³ and R⁴ are H.
 7. The compound as claimed in claim 1, wherein A is phenylene, pyridylene or pyrimidylene.
 8. The compound as claimed in claim 1, wherein E is NH.
 9. The compound as claimed in claim 1, wherein Ar is phenyl, thienyl, pyridyl, pyrimidyl, imidazolyl, isoxazolyl, thiazolyl, triazolyl, thiadiazolyl, quinolinyl, isoquinolinyl, tetrahydroisoquinolinyl, benzofuranyl, benzothiophenyl, benzoxazinyl, benzothiazolyl, benzoxadiazolyl, benzothiadiazolyl or indanyl, which may be substituted as defined in claim
 1. 10. The compound as claimed in of claim 9, wherein Ar is phenyl, thienyl, pyridyl, benzofuranyl or indanyl, which may be substituted as defined in claim
 2. 11. The compound as claimed in claim 9, wherein Ar is phenyl which carries 1, 2 or 3 substituents selected from the group consisting of halogen, C₁-C₆-alkyl, fluorinated C₁-C₄-alkyl, C₁-C₄-alkoxy, fluorinated C₁-C₄-alkoxy, C₂-C₄-alkenyl, fluorinated C₂-C₄-alkenyl, CH₂N(CH₃)₂, NR⁶R⁷, where R⁶ and R⁷ are independently of each other H, C₁-C₄-alkyl or fluorinated C₁-C₄-alkyl, C₃-C₆-cycloalkyl optionally substituted by halogen, acetyl or carboxyl, or Ar is thienyl, pyridyl, benzofuranyl or indanyl, which are optionally substituted by halogen, C₁-C₄-alkyl or C₁-C₄-alkenyl.
 12. The compound as claimed in claim 1, wherein Ar carries one radical R^(a) of the formula R^(a′)

wherein Y is N, CH or CF, R^(a1) and R^(a2) are independently of each other selected from C₁-C₂-alkyl, fluorinated C₁-C₂-alkyl and C₁-C₂-alkoxy, provided for Y being CH or CF one of the radicals R^(a1) or R^(a2) may also be hydrogen or fluorine, or R^(a1) and R^(a2) together form a radical (CH₂)_(m) wherein 1 or 2 of the hydrogen atoms may be replaced by fluorine, hydroxy, C₁-C₂-alkyl or C₁-C₂-alkoxy, wherein one CH₂ moiety may be replaced by O, S, SO, SO₂ or NR^(c), wherein R^(c) is H or C₁-C₂-alkyl, and wherein m is 2, 3, 4, 5 or
 6. 13. The compound as claimed in claim 11, wherein the radical R^(a′) is selected from isopropyl, (R)-1-fluoroethyl, (S)-1-fluoroethyl, 2-fluoroethyl, 1,1-difluoroethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, (R)-1-fluoropropyl, (S)-1-fluoropropyl, 2-fluoropropyl, 3-fluoropropyl, 1,1-difluoropropyl, 2,2-difluoropropyl, 3,3-difluoropropyl, 3,3,3-trifluoropropyl, (R)-2-fluoro-1-methylethyl, (S)-2-fluoro-1-methylethyl, (R)-2,2-difluoro-1-methylethyl, (S)-2,2-difluoro-1-methylethyl, (R)-1,2-difluoro-1-methylethyl, (S)-1,2-difluoro-1-methylethyl, (R)-2,2,2-trifluoro-1-methylethyl, (S)-2,2,2-trifluoro-1-methylethyl, 2-fluoro-1-(fluoromethyl)ethyl, 1-(difluoromethyl)-2,2-difluoroethyl, cyclopropyl, cyclobutyl, 1-fluorocyclopropyl, 2-fluorocyclopropyl, (S)-2,2-difluorocyclopropyl and (R)-2,2-difluorocyclopropyl.
 14. The compounds as claimed in claim 12, wherein the radical R^(a′) carries 1, 2, 3 or 4 fluorine atoms.
 15. The compound as claimed in claim 1, wherein Ar is phenyl that carries a radical R^(a) in the 4-position of the phenyl ring.
 16. The compound as claimed in claim 1, wherein the absolute configuration at the carbon atom carrying the group A is (S).
 17. The compound as claimed in claim 1, wherein Ar is phenyl which is substituted by a 5- or 6 membered heterocyclic radical selected from azetidinyl, pyrrolidinyl, oxopyrrolidinyl, oxo-oxazolidinyl, piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl, 1-oxothiomorpholinyl, 1,1-dioxothiomorpholinyl, pyrrolyl, furanyl, thienyl, pyrazolyl, imidazolyl, oxazolyl, isoxazolyl, triazolyl, oxadiazolyl, furazanyl, thiadiazolyl, and tetrazolyl, where the heterocyclic radical may be unsubstituted or may carry 1 to 3 substituents selected from halogen, C₁-C₄-alkyl, fluorinated C₁-C₄-alkyl, C₁-C₄-alkoxy and hydroxy.
 18. The compound as claimed in claim 17, wherein Ar is phenyl which is substituted by a 5- or 6 membered heterocyclic radical selected from azetidinyl, pyrrolidinyl, oxopyrrolidinyl, oxo-oxazolidinyl, morpholinyl, furanyl, thienyl, pyrazolyl, oxazolyl, isoxazolyl, and thiadiazolyl, where the heterocyclic radical may be unsubstituted or may carry 1 to 3 substituents selected from halogen and C₁-C₄-alkyl.
 19. A pharmaceutical composition comprising at least one compound as claimed in claim 1, optionally together with at least one physiologically acceptable carrier or auxiliary substance.
 20. A method for treating a medical disorder susceptible to treatment with a dopamine D3 receptor ligand, said method comprising administering an effective amount of at least one compound as claimed in claim 1 to a subject in need thereof.
 21. The method as claimed in claim 20, wherein the medical disorder is a disease of the central nervous system.
 22. The use of a compound as claimed in claim 1 for preparing a pharmaceutical composition for the treatment of a medical disorder susceptible to treatment with a dopamine D3 receptor ligand.
 23. The use as claimed in claim 22, wherein the medical disorder is a disease of the central nervous system. 